1) I have installed W3 from GOG via Heroic 2) then i set alternative exe to: '/HeroicGames/The Witcher 3 Wild Hunt GOTY/bin/x64_dx12/witcher.exe' 3) it works, with HDR but emulates the keyboard, no steam settings support and steam controler 4) i add it as non steam game to Steam library 5) game launches washed out colours, SteamDeck doesnt show "HDR" in status
i experimented with "Force the user of a specific Steam Play compatibility tool" the game does not launch when i select this option no matter what proton i choose.