FS22 render issues on Steam Deck

I have tried launching Farming Simulator 2022 from the heroic launcher (from Epic Games), using the latest Proton GE, and I have an error every time I launch it about requiring Shader Model 6.0. It is a dialog box and it also asks me to download the latest drivers but pressing yes does nothing. I have tried changing the renderer in game.xml to DX11, DX12, and Vulcan.