this post was submitted on 29 Aug 2025
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[–] lelgenio@lemmy.ml 9 points 9 months ago

I assume this is part due to many games only having support for OpenGL and DirectX, and no Vulkan support. OpenGL has the worse performance of the three, and DirectX is windows only.

But when you using proton, you are likely also dxvk, taking benefit of the optimizations made by game/engine developers for DirectX, while suffering little overhead from the DirectX to Vulkan conversion.