QuoteWithout having to rely on Proton or translate DirectX commands, Linux can make more efficient use of the available hardware resources.
This is a common misconception. Performance issues aren't at the translation layer, but rather the GPU driver. Proton and WINE are actually in a position now where there's little to no overhead from things being ran through them. Linux has better OpenGL/Vulkan support than Windows, which is why many games perform better, and thanks to them finally adopting Wayland support, this helped with performance quite a bit. You just have to be sure to set the appropriate environment variable in the launch options for your game (WINE_WAYLAND/PROTON_WAYLAND), because they still default to xwayland for the sake of compatibility.