Hello @an9949an, poor performance with the NVIDIA driver if part of the hot path gets bumped to system ram has been a characteristic of the NVIDIA proprietary driver for over a decade, well before modern graphics APIs or Proton. This isn't new or specific to Proton in any way.
Hello @an9949an, poor performance with the NVIDIA driver if part of the hot path gets bumped to system ram has been a characteristic of the NVIDIA proprietary driver for over a decade, well before modern graphics APIs or Proton. This isn't new or specific to Proton in any way.
Hello @kisak-valve ! Thank you for the answer!
For Reference from the nvidia forum:
https://forums.developer.nvidia.com/t/vram-allocation-issues/239678/47
This is still an issue in 550 drivers.
Nothing extracted yet.
System Information
On all dx12 games (for example cyberpunk and star wars: jedi fallen order) when vram reach 100% fps in the same moment drops significantly and never back to the normal value (drops from for example 70 to 5-10). GPU load in this case displayed as 100%. So, looks like it start to use dynamic memory (ram) as dedicated (vram) instead of putting something don't needed to dynamic and using this free vram space (on windows it produce stutter, but not complete drop).
I didn't test it with dxvk (i don't have so vram heavy dx11 game). Also I don't know is it actual for AMD GPUs.
Issue is very critical for the 4Gb GPUs.
Maybe this issue should be reported to some other place (nvidia? vkd3d?) but I have no ideas how to figure out which.