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Facepunch / sbox-issues

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Volumetric fog causes dropping FPS and input lag #5554

Open UAVXP opened 2 months ago

UAVXP commented 2 months ago

Describe the bug

Enabled volumetric fog is dropping down FPS and introduces an input lag of about 0.5 seconds.

GPU: AMD Radeon R7 360 2GB GPU GPU driver version: 21.09.13.02-220802a-382934C-RadeonSoftware GPU software version: 2022.0802.1058.19750 Vulkan Driver version: 2.0.179 Vulkan API version: 1.2.170

Game version: 5/22/2024 7f32df9, Steam build 14456538 Graphics settings: 1280x720 windowed, VSync off, 2xAA, 8x anisotropic

To Reproduce

  1. Open s&box
  2. Go to Material Testing map
  3. Experience 12-20 FPS and a huge input lag everywhere on the map

Expected behavior

I'm expecting a >60 FPS and no input lag on aforementioned map

Media/Files

image

Additional context

It doesn't depend on a resolution, vsync, antialiasing or texture filtering settings.

I've found a console variable named r_enable_volume_fog, set it to 0 - and a relief! - my FPS is higher than 60 and no input lag: image

samzanemesis commented 2 months ago

That's a 10 year old GPU, volume fog needs a major rework though

UAVXP commented 2 months ago

Still appreciating that this GPU is still supported in s&box tbh, thank you

pfatoba commented 1 month ago

same that fixed mine