Proton is based on WINE 3.7 and uses DXVK for DirectX11, plus some additional patches. So it’s as fast as WINE with DXVK, and a lot faster than WINE without DXVK. DXVK implements DirectX10/11 with the help of Vulkan, which makes it faster than normal WINE, because normal WINE uses OpenGL for it. Vulkan also reduces the CPU usage by a lot.
From a first test could I see that Proton renders EVE with DirectX11 without any glitches and with AA. Just as I’m used to from using my own WINE with DXVK myself.
Settings all set to high with AA at high and window blur enabled.
WINE 3.15 (DirectX11 over OpenGL) 56 fps.
WINE 3.15 with DXVK (DirectX11 over Vulkan) 107 fps.
Steam Play / Proton 3.7 (DirectX11 over Vulkan) 108 fps.
As you can see is Proton identical to WINE+DXVK. What surprised me is that normal WINE now actually runs with AA enabled, which previously caused the screen to turn black. This apparently has been fixed at some point.
WINE 3.15 (DirectX9 over OpenGL): 103 fps.
