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AnsweredHot!3090 FTW3 Ultra - Experience & Tips (for LG CX OLED users)

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Reliantg
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/15 10:13:04 (permalink)
TheLamonster
I just installed my 3090 and adjusted most of the settings in the OP.  However, my desktop icons are slightly cut off on the left side.  For example, my control panel shortcut says "ontrol Panel"
 
I have "no scaling, scale on display" already set, and my LG CX TV is set at 16:9 and justscan is on and greyed out.  Any advice?
 
 
edit: installing 3.11.25 resolved it...or maybe it was just that the TV was restarted during the update.  




Turn off Pixel Shift on the TV
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arestavo
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/15 10:21:46 (permalink)
Straykatt
Thank you for these useful tips! What are your thoughts regarding using Gsync with Vsync? A lot of people recommend using these two together but my understanding you only use Gsync. Apparently users saying you still get tearing and the only way to get no tearing is to use vsync also. Are you experiencing the bug with frames higher than 110 with gsync on? There’s a lot of users on avsforums getting this and has been escalated to LG and they said they’re aware and working on the firmware fix. Lastly I see how using pc mode does make it a little smother but using pc mode I’m not able to use dynamic contrast in pc mode and I think it looks better with it on so I leave it in hdmi mode.

Do you know why you can’t use Dolby vision in 4K 120 at 4:4:4? People are saying you have to pick either one or the other, can’t have both on at the same time?

For Gsync to work as it is supposed to, Vsync should be on (it completely eliminates tearing). Full explanation in the second drop down here: https://blurbusters.com/gsync/gsync101-input-lag-tests-and-settings/15/
 
Above 110, a couple games seemed to have issues for me - which might point to it being a driver issue. I cap it at 110 for now and am fine.
 
I am not sure about Dolby Vision at 4:4:4 (why wouldn't you use RGB like the panel takes natively?). Likely a bandwidth issue, as 40.1 might not be enough.
 
 

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arestavo
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/15 10:22:29 (permalink)
Reliantg
TheLamonster
I just installed my 3090 and adjusted most of the settings in the OP.  However, my desktop icons are slightly cut off on the left side.  For example, my control panel shortcut says "ontrol Panel"
 
I have "no scaling, scale on display" already set, and my LG CX TV is set at 16:9 and justscan is on and greyed out.  Any advice?
 
 
edit: installing 3.11.25 resolved it...or maybe it was just that the TV was restarted during the update.  




Turn off Pixel Shift on the TV


I turn it off and turn it back on and everything is good. It sometimes gets stuck further left and needs that nudge.

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aldur80
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/15 10:46:08 (permalink)
arestavo
Reliantg
TheLamonster
I just installed my 3090 and adjusted most of the settings in the OP.  However, my desktop icons are slightly cut off on the left side.  For example, my control panel shortcut says "ontrol Panel"
 
I have "no scaling, scale on display" already set, and my LG CX TV is set at 16:9 and justscan is on and greyed out.  Any advice?
 
 
edit: installing 3.11.25 resolved it...or maybe it was just that the TV was restarted during the update.  




Turn off Pixel Shift on the TV


I turn it off and turn it back on and everything is good. It sometimes gets stuck further left and needs that nudge.


I had this problem with my LG CX until I updated to the beta software.
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Veratu
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/15 19:00:50 (permalink)
aldur80
Veratu
Once this is setup the LG and 3x series really shines... the display quality and output is truly fantastic.  Don't spend ridiculous amounts of money on HDMI cables, it's a digital signal as long as it's rated for the proper bandwidth with the right pins and gauge of wire it'll likely be just fine.  I personally use the Monoprice DynamicView Ultra 8K Premium High Speed HDMI Cable, 48Gbps, 8K, Dynamic HDR, eARC cable, the 6ft version costs a whopping $14 and it's perfect.  I use these on all 9 of the OLEDS in my house and they test solid for every video, bandwidth, and chroma test I've done so far.


I agree with everything you said except about the cables. There are so many cables on Amazon that says they are 8k 60hz 48 Gbps and they don't work for me. I went through around 10 cables before I found one that actually works. You have to go with a decent brand, like what you did with Monoprice. Although I needed a really long cable and you're more than likely to find a cable that works if it's a short cable. I finally settled on a 30 foot optical HDMI 8k/120 Monoprice cable that was dang expensive, but it actually works.


Sure, but there has to be a little common sense here.  HDMI at that bandwidth can only go a certain distance without needing a booster, repeater, or something like a fiber optic conversion.  My message implied that a cable manufactured within specs of the standard should be fine and that it doesn't require a $45 cable for this stuff to work properly.  There are plenty of $14 cables that meet or exceed the specs and work excellent.
 
 
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perman088
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/15 19:22:50 (permalink)
Any good ones that you can recommend?
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arestavo
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/15 19:24:48 (permalink)
perman088
Any good ones that you can recommend?

HDMI cable? The 10 foot one here worked great for me: https://www.amazon.com/gp..._s00?ie=UTF8&psc=1

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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/15 19:45:36 (permalink)
Veratu
aldur80
Veratu
Once this is setup the LG and 3x series really shines... the display quality and output is truly fantastic.  Don't spend ridiculous amounts of money on HDMI cables, it's a digital signal as long as it's rated for the proper bandwidth with the right pins and gauge of wire it'll likely be just fine.  I personally use the Monoprice DynamicView Ultra 8K Premium High Speed HDMI Cable, 48Gbps, 8K, Dynamic HDR, eARC cable, the 6ft version costs a whopping $14 and it's perfect.  I use these on all 9 of the OLEDS in my house and they test solid for every video, bandwidth, and chroma test I've done so far.


I agree with everything you said except about the cables. There are so many cables on Amazon that says they are 8k 60hz 48 Gbps and they don't work for me. I went through around 10 cables before I found one that actually works. You have to go with a decent brand, like what you did with Monoprice. Although I needed a really long cable and you're more than likely to find a cable that works if it's a short cable. I finally settled on a 30 foot optical HDMI 8k/120 Monoprice cable that was dang expensive, but it actually works.


Sure, but there has to be a little common sense here.  HDMI at that bandwidth can only go a certain distance without needing a booster, repeater, or something like a fiber optic conversion.  My message implied that a cable manufactured within specs of the standard should be fine and that it doesn't require a $45 cable for this stuff to work properly.  There are plenty of $14 cables that meet or exceed the specs and work excellent.
 
 

Sorry, I must not have been clear enough with what I was trying to get across. I tried many optical HDMI cables that were supposedly within spec, 8k 48 Gbps, and none of them worked except the really expensive monoprice one. Granted I'm focusing on optical cables, but my point just because the marketing for the cable says it is within spec, it doesn't mean that it is going to work.

Now with that being said, there seems to be much less problems with this scenario when using short non-optical cables, such as the cheap monoprice one you listed. But I've seen other people use some random short non-optical HDMI cable that didn't work with a CX and 3080/3090 and was marketed as being 8k 48 Gbps.
post edited by aldur80 - 2020/10/15 19:53:06
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Veratu
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/15 22:09:06 (permalink)
perman088
Any good ones that you can recommend?

If you need only 8ft or less, I use Monoprice DynamicView Ultra 8K Premium High Speed HDMI Cable, 48Gbps, 8K, Dynamic HDR, eARC cable,  through my entire house.  I have all lengths, and all of them have passed the full 48Gb test just fine.
 
If you need more than 8ft, then you'll want to investigate different mediums, likely fiber optic, and from a quality vendor.  However to be clear quality vendor does not mean go get ripped off by someone like Monster Cable where they charge $45 for something you can get of equal function for $20 from a different brand.  Just be smart, look at the amazon reviews as most will be real clear which work and which do not.  Cheap cr*p is usually just that, cr*p.
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aldur80
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/16 08:04:42 (permalink)
Veratu
perman088
Any good ones that you can recommend?

If you need only 8ft or less, I use Monoprice DynamicView Ultra 8K Premium High Speed HDMI Cable, 48Gbps, 8K, Dynamic HDR, eARC cable,  through my entire house.  I have all lengths, and all of them have passed the full 48Gb test just fine.
 
If you need more than 8ft, then you'll want to investigate different mediums, likely fiber optic, and from a quality vendor.  However to be clear quality vendor does not mean go get ripped off by someone like Monster Cable where they charge $45 for something you can get of equal function for $20 from a different brand.  Just be smart, look at the amazon reviews as most will be real clear which work and which do not.  Cheap cr*p is usually just that, cr*p.


This is exactly right, 8 ft or less, you can go with some pretty cheap cables, Monoprice is a high quality brand and their standard HDMI 8k cables are fantastic. Anything over 8 feet and you'll need to go with HDMI optical cables, which tend to be much more expensive. I needed a 30 foot run so I went with the following monoprice cable which works fantastic, but is really expensive unfortunately.
 
https://smile.amazon.com/gp/product/B07Y2DS1JV/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1
 
#70
oninaig
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/16 12:02:41 (permalink)
So I came from a 1080ti hybrid so I was used to a fairly silent GPU, so I am not sure if this is just how blower cards are or if theres something more, but basically my 3090 FTW makes this vibrating motor noise whenever the fans get past like 50% and because my case is metal, it amplifies it a lot. Heres an example: 

In the video I am not talking about the noise of the actual air moving past the fans, but rather what sounds like the fan motors spinning up and vibrating more and more as the RPMs increase.

Is this the same for everyone's FTW 3090?
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timc878
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/16 19:41:56 (permalink)
Having connection issues with 48 CX and 3080 hoping you guys can help. I previously had a gtx 1080 and everything worked fine. With the 3080 I only have 60hz available and under pc resolution 4K and 2k are not listed where they were with the 1080. Also when I try to enable deep color or game mode the tv loses signal and I have to disable and restart the tv.

I thought it may be a cable issue so I bought a new 8k cable and still have the same result. I have the latest nvidia drivers, latest LG firmware, and updated the 3080 firmware. Anybody have any ideas what could be causing this?
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kring
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/16 20:14:10 (permalink)
timc878 - I can pretty much guarantee it's the cable. that's the exact symptoms that having insufficient bandwidth in the cable will show.
 
Was it an amazon cable? all those are probably garbage. 
 
I just received this cable: Monoprice DynamicView Ultra 8K Premium High Speed HDMI Cable, 48Gbps, 8K, Dynamic HDR, eARC, 6ft Black.  Ordered direct from them for $14 shipped.
 
I had the Monster Optical HDMI and I experienced issues with that cable so it's going back, which others had similar troubles.  many games wouldn't play full screen, and RDR2 Vulkan never worked... swapped to this monoprice cable and no issues so far...  I have a feeling there are very few cables that actually support 48gbps.
post edited by kring - 2020/10/16 20:45:13
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aldur80
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/16 20:45:59 (permalink)
Yep, definitely a cable issue. I went through tons of cables with the exact same problem before finding one that works (monoprice 30 ft 8k optical HDMI).
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timc878
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/17 11:24:03 (permalink)
So I just bought a audioquest pearl 1m cable and still having the same issue. Guess I’ll keep trying cables to find one that works. I use monoprice frequently but I would like to avoid the shipping delay.
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treswaters
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/18 12:07:56 (permalink)
aldur80
Yep, definitely a cable issue. I went through tons of cables with the exact same problem before finding one that works (monoprice 30 ft 8k optical HDMI).

I got the 40 ft optical cable from monoprice with no luck. It wouldn't work at anything above 1080p 120 hz on my C9. Oddly enough it would work at 4k 60 8 bit if I had a 2nd monitor plugged in but got no signal with just the TV plugged in. If I use a 6 ft monoprice 2.1 cable 4k 120hz 12 bit rgb works fine.
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vexorian87
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/18 16:21:46 (permalink)
My 3090 is arriving on Tuesday. Is the recommended settings for the LG C9 going to be RGB Full 10bit 4:4:4 with TV black level (in PC mode) set to high?
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kring
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/18 19:06:26 (permalink)
it will be: Highest, 10 bpc, RGB, Full.   there is no 4:4:4 with RGB.   you can see all the settings in the first post and other info, I keep that updated.
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morness
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 07:30:10 (permalink)
I have an LGCX48 with a MSI Ventus 3090 and really just wanted to say thank you to all the posts here. Definitely some frustrating setup, mostly on the LG side. Short version:
  • Latest Nvidia drivers solved the crashes, and LG firmware applied
  • Turning off Instant Game Response solved black flicker issues
  • 10 bpc RGB full (was on the 4:4:4)
  • Learning how to make your HDMI input a PC port through the home screen is crazy buried! Turning off and on the TV again fixed any resolution cropping issues during setup.
The one thing that blew me away was really how amazing 4K 120Hz gaming is. I'm not really achieving 120 fps, but definitely in the range of 90+. And OMG the cursor smoothness was not expected. I've been gimping around with a 2080 Ti which through HDMI limited me to 60Hz though the card couldn't truly push past that anyways. Whole new world! 
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aldur80
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 07:37:18 (permalink)
morness
I have an LGCX48 with a MSI Ventus 3090 and really just wanted to say thank you to all the posts here. Definitely some frustrating setup, mostly on the LG side. Short version:
  • Latest Nvidia drivers solved the crashes, and LG firmware applied
  • Turning off Instant Game Response solved black flicker issues
  • 10 bpc RGB full (was on the 4:4:4)
  • Learning how to make your HDMI input a PC port through the home screen is crazy buried! Turning off and on the TV again fixed any resolution cropping issues during setup.
The one thing that blew me away was really how amazing 4K 120Hz gaming is. I'm not really achieving 120 fps, but definitely in the range of 90+. And OMG the cursor smoothness was not expected. I've been gimping around with a 2080 Ti which through HDMI limited me to 60Hz though the card couldn't truly push past that anyways. Whole new world! 


Keep in mind that turning off "Instant Game Response" mode turns off G-sync. Although G-sync won't show that it's off in the Nvidia control panel until you start a game.
 
I was getting the same flickering issues with "Instant Game Response" mode that you were. Simply turning it off and back on every time I was about to start a game fixes it for me.
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kring
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 07:58:26 (permalink)
morness
I have an LGCX48 with a MSI Ventus 3090 and really just wanted to say thank you to all the posts here. Definitely some frustrating setup, mostly on the LG side. Short version:
  • Latest Nvidia drivers solved the crashes, and LG firmware applied
  • Turning off Instant Game Response solved black flicker issues
  • 10 bpc RGB full (was on the 4:4:4)
  • Learning how to make your HDMI input a PC port through the home screen is crazy buried! Turning off and on the TV again fixed any resolution cropping issues during setup.
The one thing that blew me away was really how amazing 4K 120Hz gaming is. I'm not really achieving 120 fps, but definitely in the range of 90+. And OMG the cursor smoothness was not expected. I've been gimping around with a 2080 Ti which through HDMI limited me to 60Hz though the card couldn't truly push past that anyways. Whole new world! 




Glad to hear, if you learn anything new too - would love to hear your experience, we're still figuring all this out !
 
I found that a DDU utility uninstall from safe mode, and fresh install of latest Nvidia drivers, plus Aldur80's turn on/off - completely eliminated the flickers for me across all games.  might be worth trying that... It's been working great now for 2 weeks since doing that.
 
BTW - your point on the mouse cursor is significant! - 120hz is a major different over 60, dragging apps, cursor, website page scrolling etc... such a better desktop experience.  
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morness
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 08:14:24 (permalink)
aldur80
 
Keep in mind that turning off "Instant Game Response" mode turns off G-sync. Although G-sync won't show that it's off in the Nvidia control panel until you start a game.
 
I was getting the same flickering issues with "Instant Game Response" mode that you were. Simply turning it off and back on every time I was about to start a game fixes it for me.



Are you sure? I don't believe I was experiencing anything but silky smooth gameplay (around 90Hz)
kring
morness
I have an LGCX48 with a MSI Ventus 3090 and really just wanted to say thank you to all the posts here. Definitely some frustrating setup, mostly on the LG side. Short version:
  • Latest Nvidia drivers solved the crashes, and LG firmware applied
  • Turning off Instant Game Response solved black flicker issues
  • 10 bpc RGB full (was on the 4:4:4)
  • Learning how to make your HDMI input a PC port through the home screen is crazy buried! Turning off and on the TV again fixed any resolution cropping issues during setup.
The one thing that blew me away was really how amazing 4K 120Hz gaming is. I'm not really achieving 120 fps, but definitely in the range of 90+. And OMG the cursor smoothness was not expected. I've been gimping around with a 2080 Ti which through HDMI limited me to 60Hz though the card couldn't truly push past that anyways. Whole new world! 




Glad to hear, if you learn anything new too - would love to hear your experience, we're still figuring all this out !
 
I found that a DDU utility uninstall from safe mode, and fresh install of latest Nvidia drivers, plus Aldur80's turn on/off - completely eliminated the flickers for me across all games.  might be worth trying that... It's been working great now for 2 weeks since doing that.
 
BTW - your point on the mouse cursor is significant! - 120hz is a major different over 60, dragging apps, cursor, website page scrolling etc... such a better desktop experience.  


Nice. It's still literally new for me -- just installed and configured last night. Will get to game some tonight. But don't yet have much time under my belt. I'll also add that I bought cheapo 8K HDMI cables from Amazon (cablematters.com brand) and they are fine. Digital cables either work or don't work, I saw a lot of posts talking about this. 
#82
arestavo
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 08:25:03 (permalink)
One problem that I have now with my 65" CX - On power on for the TV, I get black screen flickering that happens often (once or twice every couple seconds), or sometimes not very often (once a minute or two). This is with the .26 firmware, I did NOT have this with the .25 beta firmware. A workaround has been to disable Instant Game Response in the All Settings / Additional Settings menu (it's still enabled, and has the pop up showing that it is enabled, because I named the input PC).

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aldur80
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 08:28:33 (permalink)
morness
 
Are you sure? I don't believe I was experiencing anything but silky smooth gameplay (around 90Hz)
 

Yep, absolutely positive. If you have a second monitor and can leave the Nvidia control panel open on that monitor. Try turning off "Instant Game Response" mode and starting the game. You'll see in the Nvidia control panel that the TV is no longer shown as a G-Sync compatible monitor.
 
morness
Nice. It's still literally new for me -- just installed and configured last night. Will get to game some tonight. But don't yet have much time under my belt. I'll also add that I bought cheapo 8K HDMI cables from Amazon (cablematters.com brand) and they are fine. Digital cables either work or don't work, I saw a lot of posts talking about this. 

As with digital cables, even if you get a picture, it might not work all the way. Some of the cables I got would show a picture, but HDR wouldn't work, or G-Sync wouldn't work. Some would give a picture, but I couldn't get 4k output.
post edited by aldur80 - 2020/10/20 08:33:45
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 08:38:18 (permalink)
arestavo
One problem that I have now with my 65" CX - On power on for the TV, I get black screen flickering that happens often (once or twice every couple seconds), or sometimes not very often (once a minute or two). This is with the .26 firmware, I did NOT have this with the .25 beta firmware. A workaround has been to disable Instant Game Response in the All Settings / Additional Settings menu (it's still enabled, and has the pop up showing that it is enabled, because I named the input PC).


I'm on 3.11.25 still and when I turn off "Instant Game Response" mode I get the message that "Instant Game Response" is launched, but when I start a game G-Sync turns off. If you look at Nvidia control panel after a game is launched, does it still show that the TV has G-sync enabled? If not then "Instant Game Response" mode isn't working.
 
Also, what happens if once the flickering start if you disabled "Instant Game Response" mode and then re-enable it?
post edited by aldur80 - 2020/10/20 08:40:49
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kring
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 08:46:00 (permalink)
I'll add a section in the first post about cable results.   so far I had 5 failed cables, and only 1 working.
 
Please share your specific cables that are working or not working and I'll update the OP.  For it to be "Working" it means ZERO issues. every game works, windows runs 4K full color with 32-bit 10 bpc @ 120hz,  there is never any flicker, all games launch FULLSCREEN and run without issues, artifacts.
 
Signs of cable failure: Unable to reach full windows resolution @ 120hz, games only run in windowed/boarderless but not full screen, there is flickering or occasional black screens, games crash or failing to start.
 
Working:
  • Monoprice DynamicView Ultra 8K Premium High Speed HDMI Cable, 48Gbps, 8K, Dynamic HDR, eARC, 6ft Black - Product # 31231
 
Failed:
  • Monster UHD Platinum Fiber Optic HDMI Cable - 15ft - VIPRB-HDMI700HD4M 
    • Full Screen RDR2 fails on Vulkan, Tomb Raider Crashes at launch.
  • AmazonBasics Nylon-Braided 4K, 18Gbps HDMI to HDMI Cable, 10 Feet
    • No 4K 120hz Desktop resolution, no games run 4K
  • 4K HDMI Cable 10 ft - Atevon High Speed 18Gbps HDMI 2.0 Cable - HDCP 2.2-4K HDR, 3D, UHD 2160P, 1080P, Ethernet - 28AWG Braided
    • No 4K 120hz Desktop resolution, no games run 4K
  • Twisted Veins HDMI Cable 8 ft, 2-Pack, Premium HDMI Cord Type High Speed with Ethernet, Supports HDMI 2.0b 4K 60hz HDR
    • No 4K 120hz Desktop resolution, no games run 4K
  • Generic HDMI cables
    • Mixed results but none of them worked for games, only a few let windows run 120hz.
#86
arestavo
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 08:49:05 (permalink)
aldur80
I'm on 3.11.25 still and when I turn off "Instant Game Response" mode I get the message that "Instant Game Response" is launched, but when I start a game G-Sync turns off. If you look at Nvidia control panel after a game is launched, does it still show that the TV has G-sync enabled? If not then "Instant Game Response" mode isn't working.
 
Also, what happens if once the flickering start if you disabled "Instant Game Response" mode and then re-enable it?



And here I thought I was working around the damn black screen flickering that is getting worse on .26. So, bit of a back story - after updating from .25 to .26 I wasn't getting this issue. Then it started happening only sometimes when I turn the TV on, and I found that turning HDMI UHD Deep Color on and off fixed it, then later I had to do it twice. This morning that didn't work at all, so I tried another suggestion of turning off the Instant Game Response and turning it back on. It still flickered.
 
This might be a byproduct of me starting to run my 3090 working folding@home full time over night - these drivers are still spotty, and I sometimes see that afterburner is all funky town graphics (indicating a driver failed and recovered).
 
Just for shrimp and giggles, I am going to get a new cable to test - I still think that it's a driver and or TV firmware (since .25 worked fine), but it won't hurt to have a second 8K cable.
post edited by arestavo - 2020/10/20 08:53:50

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#87
aldur80
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 09:06:52 (permalink)
kring
I'll add a section in the first post about cable results.   so far I had 5 failed cables, and only 1 working.
 
Please share your specific cables that are working or not working and I'll update the OP.  For it to be "Working" it means ZERO issues. every game works, windows runs 4K full color with 32-bit 10 bpc @ 120hz,  there is never any flicker, all games launch FULLSCREEN and run without issues, artifacts.



I would put another section with the "Mostly Working" title. For example, the 30 foot optical 8k monoprice cable mostly works for me. All I need to do is turn "Instant Game Response" mode off and on before playing a game to get g-sync to work properly, everything else works perfectly fine. And it's the only long optical cable that I found that works that well.
 
https://smile.amazon.com/gp/product/B07Y2DS1JV/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
 
arestavo
 
And here I thought I was working around the damn black screen flickering that is getting worse on .26. So, bit of a back story - after updating from .25 to .26 I wasn't getting this issue. Then it started happening only sometimes when I turn the TV on, and I found that turning HDMI UHD Deep Color on and off fixed it, then later I had to do it twice. This morning that didn't work at all, so I tried another suggestion of turning off the Instant Game Response and turning it back on. It still flickered.
 
This might be a byproduct of me starting to run my 3090 working folding@home full time over night - these drivers are still spotty, and I sometimes see that afterburner is all funky town graphics (indicating a driver failed and recovered).
 
Just for shrimp and giggles, I am going to get a new cable to test - I still think that it's a driver and or TV firmware (since .25 worked fine), but it won't hurt to have a second 8K cable.


Dang, that sucks. Thanks for reporting it though. I'll stay on .25 for now then. Maybe things will be better in .27?
#88
arestavo
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 10:25:17 (permalink)
The Gsync stutter at 111-120 FPS is fixable and being addressed by LG it looks like - before the end of the year, so not as quickly as the previous roll out.

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#89
nnarkis
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Re: 3090 FTW3 Ultra - Experience & Tips 2020/10/20 11:33:44 (permalink)
New to this thread, so I’m just starting to explore this with my LG 65C9AUA. Apparently this can support 120Hz 4K G-Sync with a firmware update to 04.90.33. I’m currently at 04.80.03 and I don’t know how to get the required update. Another big problem is my inability to get a 3090 FTW3 Ultra, however I’m hoping my notification will come soon and solve that issue.
 
Will this firmware 04.90.33 update be available online?
 
On the topic of cables, I had a heck of a time getting my 4K UHD player to play HDR content without “sparklies”. The only cable I found that works is a “ECHOGEAR 8ft Braided HDMI Cable - 4k & HDR Compatible” I got from Amazon. It’s supposed to support HDMI 2.1 (48 GBPs), and I can say it definitely solved my sparklies issue. Don’t know if anyone else has tried this cable, but it’s the one I’m going to try when I can get my 3090 and figure out how to update my C9’s firmware...
#90
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