


Low settings nessesary
It just works Running DX12

I just use Proton GE 9-2 and I didn't need to change anything in the config files. It just works.

change to DX11 as DX12 can get unstable even on Windows

If you can make a few settings to use DX11, the game runs well and single player is great
Created the config file is located at: ~/.steam/steam/steamapps/compatdata/1462810/pfx/drive_c/users/steamuser/Documents/My Games/WRC10/UserSettings.cfg
Value to set: Engine.Device.DirectXVersion = 11;
Had to modify graphical as textures on Window in 'in-car' view was blocky, or switch to alternate view
Thanks to MotorHead for the tip to tweak

Custom Proton: GE, Changed configuration Set DirectX version to 11, since DX12 causes game crashes and launch problems.
The config file is located at: ~/.steam/steam/steamapps/compatdata/1462810/pfx/drive_c/users/steamuser/Documents/My Games/WRC10/UserSettings.cfg
Value to set: Engine.Device.DirectXVersion = 11;
There was not file usersettings.cfg so I have made one as txt then rename as UserSettings.cfg and then I type when opened this value above.
Crashed often until switching to dx11 via menu
Runs smooth with about 40 fps on deck with medium settings

The start screen will show up, do its slow zoom in animation for 2 seconds (without accepting any inputs) and then crash in such a way where shutting off the Steam Deck is the only way to escape. It will also reboot by itself after 30 or so seconds. Attempted starting with Proton 7.0.2, 6.3.8 and experimental, same result every time.