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Tell one thing that you miss after switching from another OS to Linux. (lemmy.ml)
submitted 2 years ago* (last edited 2 years ago) by to c/linux@lemmy.ml
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For me, it's Shared GPU memory.

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[–] [S] 3 points 2 years ago* (5 children)

This honestly sounds like you're seeing a bug.

Well, it probably is. I'll soon be getting a GPU with a bigger VRAM and putting that GPU into my home server for Jellyfin as a replacement for QuickSync (NVENC is better, imo).

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  • [–] 1 point 2 years ago (4 children)

    Did you try their fix? Often it really is as easy as adding a launch option

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  • [–] [S] 1 point 2 years ago (3 children)

    I added game modern mangohud PROTON_ENABLE_NVAPI=1 %command% to the startup configuration and it still runs like shit. I'll try running it on a Windows VM (VMware as a hypervisor).

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  • [–] 3 points 2 years ago* (1 child)

    I meant the:

    -force-d3d12

    one. Might need to put "%command%" after it, but I'm still not 100% sure what that even means and why its there so I dunno.

    Edit: I would also check out the entry for the game on ProtonDB if you haven't already (sorry if someone else has already told you all this elsewhere in the thread) to see if anyone else has had similar issues: https://www.protondb.com/app/949230

    I haven't played C:S2 yet, so I can't say personally, but it could just be a poorly optimized game.

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  • [–] 2 points 2 years ago

    "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-d3d12 flag 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).

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