Proton

• Creates for each game a lightweight windows filesystem
• Translates the game into linux instructions
• Contains
• wine: windows compatibility layer
• dxvk: Direct X (9|10|11) to Vulkan translation
• dkd3d: Direct X 12 to Vulkan translation
• Forks
• ge-proton: allows more gaming support (aur: proton-ge-custom-bin)

Custom proton install

• Grab the tarball from the provider website (e.g., GE-Proton7-37.tar.gz)
• Copy it into ~/.steam/compatibilitytools.d/

Environment Variables

PROTON_LOG=1 %command%

• Logs are saved to ~/.var/app/com.valvesoftware.Steam/steam-<app-id>.log

DXVK_HUD=1 # fps counter
VKD3D_HUD=1 # fps counter
DXVK_FILTER_DEVICE_NAME=NAVI23 # force a gpu for Direct X (9|10|11) -- get the id from vulkaninfo | grep '^GPU id'
VKD3D_FILTER_DEVICE_NAME=NAVI23 # force a gpu for Direct X 12 -- get the id from vulkaninfo | grep '^GPU id'
__NV_PRIME_RENDER_OFFLOAD=1
__GLX_VENDOR_LIBRARY_NAME=nvidia
__NV_PRIME_RENDER_OFFLOAD=1
%command%