Massive Framedrop Fix Solution, turn off Cuda Sysmem Fallback Policy

[Nite69]

if on Nvidia card, go into Nvidia control panel and look for a setting called

CUDA - Sysmem Fallback Policy

change it from "driver default" to "Prefer No Sysmem Fallback"

after I did this I was able to play the longest I ever have in a busy area, maxed graphics, about 3 or 4 hours and not ONE massive framedrop to 4fps this fixed it for me, I didn't even know nvidia added this in the later drivers.... and somehow I missed it, game runs so much better now

Nobody wants thier VRAM to fall back to system ram while gaming so wtf why did nvidia add this?

[DangerousChicken]

going to try this now

[Vivianite]

do you have any upscalers or frame gen enabled with this disabled

[Nite69]

Originally posted by Vivianite:

do you have any upscalers or frame gen enabled with this disabled

yes I do FSR3 Framegen and DLSS set to DLAA still no drop in performance it runs great now

[Vivianite]

Originally posted by Nite69:

Originally posted by Vivianite:

do you have any upscalers or frame gen enabled with this disabled

yes I do FSR3 Framegen and DLSS set to DLAA still no drop in performance it runs great now

disable those, then get back to me. i doubt disabling CUDA's system fallback policy has any weight bearing on your frame problems if these two are enabled because CUDA works with these two things anyway.

[Nite69]

Originally posted by Vivianite:

Originally posted by Nite69:

yes I do FSR3 Framegen and DLSS set to DLAA still no drop in performance it runs great now

disable those, then get back to me. i doubt disabling CUDA has any weight bearing on your frame problems if these two are enabled because CUDA works with these two things anyway.

I need FSR3 framegen on for better framrate though (30 - 40 with it off and 80 with it on) and DLSS set to DLAA gives the best visual quality

we now have a workable solution to keep those on without the massive frame drop

[Vivianite]

Originally posted by Nite69:

Originally posted by Vivianite:

disable those, then get back to me. i doubt disabling CUDA has any weight bearing on your frame problems if these two are enabled because CUDA works with these two things anyway.

I need FSR3 framegen on for better framrate though (30 - 40 with it off and 80 with it on) and DLSS set to DLAA gives the best visual quality

we now have a workable solution to keep those on without the massive frame drop

the frame-drop doesn't happen with those on anyway, even with the CUDA system fallback policy enabled or disabled. the heavy lifters is those two settings,
telling CUDA to not fallback just means it has to stick within the confinement of your graphic cards VRAM, that's it.

[Nite69]

Originally posted by Vivianite:

Originally posted by Nite69:

I need FSR3 framegen on for better framrate though (30 - 40 with it off and 80 with it on) and DLSS set to DLAA gives the best visual quality

we now have a workable solution to keep those on without the massive frame drop

telling CUDA to not fallback just means it has to stick within the confinement of your graphic cards VRAM, that's it.

thats what the player wants though, nobody wants thier VRAM to fall back to system ram while gaming, this is what is causing the massive drop for everyone cause its on by default

[Vivianite]

Originally posted by Nite69:

Originally posted by Vivianite:

the frame-drop doesn't happen with those on anyway, even with the CUDA system fallback policy enabled or disabled. the heavy lifters is those two settings,
telling CUDA to not fallback just means it has to stick within the confinement of your graphic cards VRAM, that's it.

thats what the player wants though, nobody wants thier VRAM to fall back to system ram while gaming, this is what is causing the massive drop for everyone cause its on by default

listen, DLSS and frame gen, literally are your heavy lifters. they help reduce the load by a large enough metric that CUDA's system fallback doesn't matter if it's on or off, you're not gonna notice it with """the right settings""".

when you run out of VRAM, CUDA system fallback delegates the excess to your RAM as a temporary thing until the load stabilizes, then goes back to using your VRAM. you turn this off, you might get better or worse results depending on what it is you're doing.

i asked you to turn those settings off to facilitate the environment of when CUDA would of turned on right away because this game's optimization is butts without DLSS + Frame gen. i can tell you didn't do it, so im done speaking to you.

[Nite69]

well you can believe what you want, that nvidia setting off helped me, I'm done with you too

[Nite69]

Originally posted by Donaldo Trumpado:

Not how CUDA works

then explain how my game doesn't drop to 4fps anymore? I literally do not have the issue anymore after setting this to Off, stalker 2 obviously uses it in some way

[Blaydes99]

Interesting, going to try this.

[Nite69]

Originally posted by 0x41414141:

Sadly did nothing for me. What did help (but not solve the issue entirely) was to set Nvidia's power management mode to Adaptive (I had to use Nvidia Profile Manager for that).

thats what "Normal" is, they just changed the name of it from adaptive to normal

all it does is stop the gpu from running at full clocks when idle

[Brainbleach]

Soooooo does this work or nah ?

[WooKie]

Off a quick test it only drops 10-15 running around rostock bar and shops where it would plummet and or mem leak. So you may be on to something. Don't bother with the "don't use frame gen and upscaling" people they just want something to cry about or are mad that their GTX era GPU is finally obsolete.

[Rhophius]

Originally posted by Nite69:

if on Nvidia card, go into Nvidia control panel and look for a setting called

CUDA - Sysmem Fallback Policy

change it from "driver default" to "Prefer No Sysmem Fallback"

after I did this I was able to play the longest I ever have in a busy area, maxed graphics, about 3 or 4 hours and not ONE massive framedrop to 4fps this fixed it for me, I didn't even know nvidia added this in the later drivers.... and somehow I missed it, game runs so much better now

Nobody wants thier VRAM to fall back to system ram while gaming so wtf why did nvidia add this?

DLSS is the reason you have ram issues