Why do you have both open source and proprietary driver installed? Provide proper system information.
Which one? There is no general “do that” for things to work. Depending how you start the game and from where, this is not the same.
Ray Tracing will be available only if you launch game properly, but first things first, provide system information.
It may, but Ray Tracing will not be available anyway as all graphics cards are seen as AMD card in Proton, without forcing some settings at launch time.
TLDR; launch options in Steam with latest Proton
PROTON_ENABLE_NVAPI=1 PROTON_HIDE_NVIDIA_GPU=0 VKD3D_CONFIG=dxr11 %command%