A lead on the proton performance issues
Posted: Fri Oct 14, 2022 8:02 pm
I've been annoyed a lot about the proton performance problems (opening the ship editor or doing anything ship-related slows the performance to 1-2 FPS territory) and they seemed dxvk-related on a cursory inspection, so I made a DXVK bug report. However, one of the DXVK developers looked into the apitrace from my run and they said it looks like a bug with the game itself, specifically the game failing to free VRAM after loading textures into it.
Some quotes:
Some quotes:
Something that's definitely noticable though: it creeps up to 12GB of VRAM. Pretty sure the 3070 only has 8, so it resorts to putting a lot of resources into regular system memory which can completely destroy performance in some cases. A lot of newer AMD GPUs have 16GB of VRAM, so I can definitely see why this would be less of an issue on those.
My DXVK bug report: https://github.com/doitsujin/dxvk/issues/2990I strongly suspect this is a game bug. It creates a LOT of textures and never frees them.