Sajin
From the release notes...
 
Windows 10 Issues:
 
[358.50, G-SYNC, GM200] Huge performance drop observed when any application is run in G-SYNC windowed mode. [200143562] This issue can be circumvented by running applications in full-screen mode

Snipes7

Sajin
From the release notes...
 
Windows 10 Issues:
 
[358.50, G-SYNC, GM200] Huge performance drop observed when any application is run in G-SYNC windowed mode. [200143562] This issue can be circumvented by running applications in full-screen mode

I know that's why I tested the fullscreen mode. But the issue still persists! So for me at least both modes are affected.
 
And for the V-Sync thing. The way I understand this option when G-sync is enabled: As soon as your fps exeeds the maximum refreshrate of your monitor frames get either capped at the given Hz of your monitor (144Hz = 144fps) because regular vsync takes over after the gsync limit is reached or if you flick that extra vsync option off your fps just continue climbing past your given Hz (>144) but screentearing can occure.
 
And with the last driver that vsync was always on with gsync because I don't need fps to exeed the 144Hz my monitor can display and it never gave me drops of fps like regular vsync does. Because as I said it just kicks in after 144Hz are reached and caps it there to prevent screentearing.
 
Edith: But I gonna check if turning this option off helps for now anyways.

bdary

Sajin

Snipes7

bdary
I wasn't going for a high score here, but just testing the same clocks with vs without Gsync.  All CPU & GPU clock speeds the same. Both runs back to back using this new driver.  My Firestrike results below.
 
With Gsync disabled in the NVCPL.  >>  15,647  http://www.3dmark.com/fs/6164773
With Gsync enabled using Full screen mode only.  >>  15,679  http://www.3dmark.com/fs/6164836
 

strange one! I benched my system, too to make sure:
 
G-Sync disabled: >> 16585 http://www.3dmark.com/3dm/8824433 (still a bit lower performance than previous driver with Gsync on... it was like ~16700. Could be in margin of error though.)
 
G-Sync enalbed fullscreen mode: >> 11480 http://www.3dmark.com/3dm/8824535 (yay timetravel back to 290X performance)
 

Scarlet-Tech
Snipes7, fill out the feedback form if you haven't already.. I doubt Nvidia cares about the forums...

http://surveys.nvidia.com...02641fa8f07694a40f8ac6 <that is linked in post one. Make sure you provide the details like you have already.

Yep did that already. Hopefully it speeds things up. Anyone experiences the same issue may also fill in the form in the survey. 
Since Bdary doesnt seem to have this issue, it could be a more specific problem.

You do know that when enabling g-sync it also enables v-sync under the gloabl settings right? If you want to run with just g-sync you will need to disable v-sync under the global settings tab.

Before I do any gaming I enable Gsync Full screen mode.  I let Vsync go to default (on) in the global settings.  No need for my FPS to exceed 144 when I'm gaming.

Snipes7
Ok this has done the trick for now. To summerize:
 
Enabling Gsync fullscreen mode also enables Vsync per default thus capping frames at your monitors refresh rate. I usually left it at that and it never bothered me other than benchmarks that I knew to exeed the 144 Hz my monitor offers so I get max scores.
This driver seems to have issues with Gsync plus Vsync dropping at least 40% fps. As I said I never had issues with leaving Vsync on by default while using Gsync.
 
So the workaround for now is to enable Gsync in fullscreen mode (haven't tested windowed mode since even the release notes state that it causes problems on the GM200 chip) while disabling Vsync that is usually turned ON by default. This combination negates the performance drop. So thx to Sajin for the heads up.
 
Only downside now is that in low load scenarios where your gpu is powerful enough to exceed your monitors refreshrate tearing can appear or like in game menues the fps can climb into the thousands... This has cost me 3 gpus back in the day. These high fps can kill your card over time and you waste a lot of energy. That's why usually in todays games menus are now capped at a certain fps, while for example TotalWar: Rome 2 has no such fps cap in it's menu.

Snipes7

bdary

Snipes7
Ok this has done the trick for now. To summerize:
 
Enabling Gsync fullscreen mode also enables Vsync per default thus capping frames at your monitors refresh rate. I usually left it at that and it never bothered me other than benchmarks that I knew to exeed the 144 Hz my monitor offers so I get max scores.
This driver seems to have issues with Gsync plus Vsync dropping at least 40% fps. As I said I never had issues with leaving Vsync on by default while using Gsync.
 
So the workaround for now is to enable Gsync in fullscreen mode (haven't tested windowed mode since even the release notes state that it causes problems on the GM200 chip) while disabling Vsync that is usually turned ON by default. This combination negates the performance drop. So thx to Sajin for the heads up.
 
Only downside now is that in low load scenarios where your gpu is powerful enough to exceed your monitors refreshrate tearing can appear or like in game menues the fps can climb into the thousands... This has cost me 3 gpus back in the day. These high fps can kill your card over time and you waste a lot of energy. That's why usually in todays games menus are now capped at a certain fps, while for example TotalWar: Rome 2 has no such fps cap in it's menu.

Actually this driver doesn't have the issue you mention across the board or I would see it as well.
 
The driver may however have an issue with certain hardware and/or software configs.  Or even running background processes.

To clear things up this issue seems to affect most likely GM200 chips like the 980Ti and TitanX. Even the release notes mention a problem with G-sync and a GM200 chip. Your card GTX970 is a GM204 chip. I guess these chips don't suffer from this bug.

Scarlet-Tech

newls1
if im not using a g-sync monitor, you think ill experience any of these issues?  Don't yet have my 980Ti's yet (Coming today) but just trying to figure out which driver to install on a fresh install of win10

Test it yourself. You can always remove them and use 355.82 if nothing else, but if the new one works for you, then you are golden.