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AnsweredHot!Red Dead Redemption 2: SLI Support

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mhijazi
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 06:00:34 (permalink)
uhwhiteguy
mhijazi
looks like it is not working for me . maybe i did something wrong. will try again.




I haven't tried yet, but make sure you're using the Vulkan API




Same thing .. 1080 Ti SLI with Sajin's settings , getting average 30 FPS  
 
Maybe your profile doesn't work with 1080 Ti .... I tried many times to export / import and that didn't do any difference in the game.
post edited by mhijazi - 2019/11/06 06:23:08
#31
PeterBee911
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 06:02:52 (permalink)
Applacy
It works for me in fps, but the light and environment are flickering... 
 
EDIT: running 2x 1080ti



Did you activate TAA? It fixes this bug for me.


#32
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 06:19:03 (permalink) ☄ Helpfulby joeymir 2019/11/07 10:34:10
So, using this profile, I get a bunch of flickering everyhwere (running 2x GTX 1080).
I have also created a profile that, in my testing, offers the same performance. It's based on the GTA 5 profile, but I changed Anti-Aliasing compatibility (weirdly with subjectively better results than changing them in Sajin's profile, more testing would be necessary to examine that, but since the performance is the same, I'm not very motivated).
In the benchmark (I actually haven't done any gameplay testing yet), in the first scene, the trees still flicker, but nothing else, in the second scene, it flickers while it fades in, but then, it runs through the rest of the benchmark without any flickering and with decent performance.
In case you want to try this profile, here it is:
 
Profile "RDR2 Custom" UserSpecified=true
ShowOn All
ProfileType Application
Executable "rdr2.exe"
Executable "red2.exe"
Setting ID_0x000858f7 = 0x00000001 UserSpecified=true
Setting ID_0x00a06946 = 0x0a0040f5 UserSpecified=true
Setting ID_0x00d55f7d = 0x00000240 UserSpecified=true
Setting ID_0x10115c8b = 0x0000003c UserSpecified=true
Setting ID_0x1033cec2 = 0x00000002 UserSpecified=true
Setting ID_0x1033dcd3 = 0x00000004 UserSpecified=true
Setting ID_0x10ecdb82 = 0x00100001 UserSpecified=true
Setting ID_0x10f9dc81 = 0x00000011 UserSpecified=true
Setting ID_0x701eb457 = 0x00000001 UserSpecified=true
Setting ID_0x708db8c5 = 0x40000000 UserSpecified=true
Setting ID_0x80857a28 = 0x00000001 UserSpecified=true
EndProfile
 
Obviously, you can change the name, and I honestly don't know why the "UserSpecified=true" is behind the name, if you want to, you can remove it. You can also change it to "ShowOn GeForce", I did neither of those changes manually, but they also haven't made a difference, so I didn't change them back.
It also doesn't matter if the "red2.exe" is added at the top, at least not for the benchmark. I left it in becuase maybe it will be relevant during gameplay, but I doubt it.
 
You will need to remove the Executables from the "Red Dead Redemption II" entry, and change the ProfileType to "Global" (or delete the entire entry).
 
The important line is "Setting ID_0x00d55f7d = 0x00000240 UserSpecified=true", this is what changes the Anti-Aliasing compatibility to the Assassin's Creed setting, which actually makes sense as those are also the Sli settings that the profile uses (the Sli bits are officially suited for AC and GTA 5)
post edited by JustusLM - 2019/11/06 06:48:27
#33
Sajin
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 06:37:50 (permalink) ☄ Helpfulby Sajin 2019/11/07 17:12:03

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#34
drmarc
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 06:46:36 (permalink)
Every custom SLI profile I have ever used/tweaked in the past involved not using TAA as it would always cause lighting/artifacts/stuttering.  Is anyone using 1080/1080ti SLI cards and actually get the profile working?  is TAA on or off in your settings?

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mhijazi
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 06:48:15 (permalink)
I have 1080 Ti FTW3 SLI and it is not working for me. Now inspector is not even loading for me. And using the tool Sajin shared in the previous post and loaded his profile settings, it is worse and flickering everywhere...
#36
allenhaeri
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 07:22:16 (permalink)
hey guys i dont have the game yet but i think that to make does work the game being an opengl application it must be using the standard sli profile bits (dx9) 
for example, DOOM uses Vulkan and it has an official sli profile just take a look to this profile

Attached Image(s)

#37
mhijazi
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 07:28:45 (permalink)
I tried many times. with different versions of inspector , same result. So I guess , GTX and RTX cards will react differently with the settings provided in previous posts. I give up for now.
 
If someone managed to get it working with 1080 Ti SLI , please share the profile.
#38
JustusLM
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 07:34:00 (permalink)
Unfortunately, it's not that simple. For one, RDR2 is not an OpenGL application. Vulkan is an entirely different API (even though it is "next gen OpenGL").
RDR2 also doesn't have an official Sli profile. Now, one might think that perhaps it would make the most sense to use the DOOM profile since it uses Vukan, too.
However, this is not the case because Sli compatibility also depends massively on the game's engine, not just the API.
 
I would be lying if I said I understood precisely how Sli compatibility works, but what I do know is that it's insanely complicated.
#39
dataplague
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 07:46:01 (permalink)
freezes on loading into the game using saijins profile, any further advice?
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 08:32:02 (permalink)
Went to bed and figured this thread was dead Now Sajin, you have me debating giving it a try. NvidiaInspector has been very useful in the past in these situations. It makes me believe Nvidia may have a driver within a couple months that will indeed help push SLI along. For those with 10xx series cards with failed attempts; what driver version(s) are you using?

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#41
JustusLM
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 08:34:34 (permalink)
@dataplague
You can try my profile...
I can't promise anything, all I know is it works with 2x GTX 1080 Sli.
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mhijazi
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 08:35:53 (permalink)
joeymir
Went to bed and figured this thread was dead Now Sajin, you have me debating giving it a try. NvidiaInspector has been very useful in the past in these situations. It makes me believe Nvidia may have a driver within a couple months that will indeed help push SLI along. For those with 10xx series cards with failed attempts; what driver version(s) are you using?


I’m on 441.12 drivers . 1080 Ti sli
#43
drmarc
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 10:15:59 (permalink)
JustusLM
@dataplague
You can try my profile...
I can't promise anything, all I know is it works with 2x GTX 1080 Sli.



Downloading game now - will let you know if your profile works as I have the same cards.  Which AA is it using?

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#44
KnutHansen
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 10:22:16 (permalink)
Hello,
 
I have done everything as proposed by Sajin. I am unsing RTX 2080 Ti SLI with the newest nvidia drivers. Unfortunately the profile import does not affect SLI. Does anyone know where could be the mistake. I am using Vulkan as graphics API. 
#45
JustusLM
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 10:25:58 (permalink)
drmarc
Downloading game now - will let you know if your profile works as I have the same cards.  Which AA is it using?


I haven't set anything in the profile, so you can actually choose in-game.
However, you need to have TAA enabled in some form, otherwise you'll get an image that's either over- or underexposed, depending on the brightness of the scene (I actually haven't tested this with this exact profile, but it should still apply).
But you can add FXAA or MSAA on top of that, and it should also be possible to use other types if AA through the profile inspector or Nvidia control panel.
#46
CraptacularOne
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 10:42:42 (permalink)
Everything maxed getting 70+ fps in game, upwards of 90-100 when in towns that don't have a bunch of alpha and particle effects like snow. Running on a single RTX 2080 Ti at 3840x1080 ultrawide. 
 

 
post edited by CraptacularOne - 2019/11/06 10:48:44

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Re: Red Dead Redemption 2: SLI Support 2019/11/06 11:10:40 (permalink)
Not sure what your 1080p single card results have to do with people looking for SLI help. I have 1080 in SLI and a 4k screen so I need the SLI to get acceptable framerates/settings. Anybody have any luck with 1080s yet? 
#48
drmarc
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 11:23:13 (permalink)
davidstone83
Not sure what your 1080p single card results have to do with people looking for SLI help. I have 1080 in SLI and a 4k screen so I need the SLI to get acceptable framerates/settings. Anybody have any luck with 1080s yet? 




Not playing at 4K, I'm playing at 3440x1440 with JustusLM's profile at high settings and I am getting 50 FPS with 1080 SLI.
 
I am going to continue to tweak settings though to try and hit 60 FPS.

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#49
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 11:24:28 (permalink)
davidstone83
Not sure what your 1080p single card results have to do with people looking for SLI help. I have 1080 in SLI and a 4k screen so I need the SLI to get acceptable framerates/settings. Anybody have any luck with 1080s yet?

Not sure how you think 3840x1080 is 1080p,  maybe try reading again. I'm showing that a single RTX2080 Ti is capable of playing this game at max settings at far greater than 1080p resolutions with well over 60fps. 




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#50
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 11:57:08 (permalink)
So what does your single 2080ti have to do with people looking for SLI? Your vertical resolution is 1080 which is easy to process is my point. My main point is that nobody is interested in single card FPS using a $1200 card. Maybe try reading the title of the post again. "red dead Redemption SLI Support". You are not adding anything of substance or any solutions to the question at hand. 
#51
davidstone83
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 12:00:07 (permalink)
Thank you Drmarc!
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 12:16:47 (permalink)
davidstone83
So what does your single 2080ti have to do with people looking for SLI? Your vertical resolution is 1080 which is easy to process is my point. My main point is that nobody is interested in single card FPS using a $1200 card. Maybe try reading the title of the post again. "red dead Redemption SLI Support". You are not adding anything of substance or any solutions to the question at hand. 


How completely ignorant can you possibly be? It's not just vertical lines in a resolution that are accounted for when rending and image. It's total pixel count drawn on screen. Just because vertical lines are 1080 doesn't mean it's "easy" by default.
 
3840x1080 = 4,147,200 pixels
1920x1080 = 2,073,600 pixels
 
3840x1080 is double the pixel count of "1080p" and for reference 3840x1080 is more pixels than even 2560x1440 (3,686,499 pixels) so no, 3840x1080 is far from "easy to process" 
 
What I'm demonstrating is that the game actually plays quite well on a single card at very high resolutions and detail settings. 

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#53
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 12:27:39 (permalink)
@Sajin's profile seems to work quite well except in the snowy areas in the beginning of the game. There's quite a bit of flickering and artifacting - anyone else have these issues?
 
Any way to improve/tweak the profile to make it work seamlessly?

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squall-leonhart
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 12:33:01 (permalink)
Sajins profile is garbage. (Sorry Sajin, but its fact)
 
You cannot force SLI on Vulkan or DX12 api's, the Driver has no capability to make this work and RDR2 has no DX11 renderer.
 
It's already been demonstrated by a 1080ti user that Vulkan MGPU can work, but it requires specific in game settings, play around with them and see if you can get it to.
post edited by squall-leonhart - 2019/11/06 12:35:14

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#55
kevinc313
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 12:37:43 (permalink)
mhijazi
I tried many times. with different versions of inspector , same result. So I guess , GTX and RTX cards will react differently with the settings provided in previous posts. I give up for now.
 
If someone managed to get it working with 1080 Ti SLI , please share the profile.





Are you still planning to get 2080 Ti's in SLI?  At this point you may be better off waiting for the next gen and getting a single card with a big AIO/hybrid.
#56
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 12:43:40 (permalink)
CraptacularOne
Everything maxed getting 70+ fps in game, upwards of 90-100 when in towns that don't have a bunch of alpha and particle effects like snow. Running on a single RTX 2080 Ti at 3840x1080 ultrawide. 
 

 




You're at about 10% more pixels than 1440p.  Typical 4K will be DOUBLE the pixels and give 45fps with a 2080Ti in RDR2 with max settings.
#57
CraptacularOne
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 12:49:27 (permalink)
kevinc313
CraptacularOne
Everything maxed getting 70+ fps in game, upwards of 90-100 when in towns that don't have a bunch of alpha and particle effects like snow. Running on a single RTX 2080 Ti at 3840x1080 ultrawide. 
 

 




You're at about 10% more pixels than 1440p.  Typical 4K will be DOUBLE the pixels and give 45fps with a 2080Ti in RDR2 with max settings.


Are you really trying to state that in bold like I don’t know the pixel count Of 4K? Seriously? 

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#58
stash51
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 12:56:25 (permalink)
CAPS, not bold smart guy. And quit going off topic with your nonsense.
#59
Sajin
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Re: Red Dead Redemption 2: SLI Support 2019/11/06 12:56:42 (permalink)
squall-leonhart
Sajins profile is garbage. (Sorry Sajin, but its fact)
 
You cannot force SLI on Vulkan or DX12 api's, the Driver has no capability to make this work and RDR2 has no DX11 renderer.
 
It's already been demonstrated by a 1080ti user that Vulkan MGPU can work, but it requires specific in game settings, play around with them and see if you can get it to.


No offence taken. What is the point of Vulkan MGPU if you have to run certain settings to make it work? MGPU should work at all settings not just certain ones.

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