this post was submitted on 30 Nov 2024
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"Runs like shit" is expected when you're relying on paging to system memory every frame, step 1 is to avoid a crash from oom/failed alloc.
The next step is to reduce paging if possible. I see C:S2 has a min spec of a 4GB GPU. Assuming they actually tuned their game for such a card on windows, the unfortunate reality of proton/DXVK is that there's a bit of a memory overhead and lack of knowledge about residency priority, especially when translating a dx11 game.
DX12 maps to Vulkan more closely, so my hope is that the
-force-d3d12flag would give DXVK better info to work with (ex. hopefully the game makes use of dx12 heaps and placed resources, which are 1:1 with vulkan concepts, and dxvk can make use of that to better ensure the most important resources don't get paged out).