Comment by WorldMaker

I think one of the answers here may be nVidia related. CP2077 is one of those games with a ton of "optimized for/by nVidia" magic with the nVidia driver injecting a lot of its own GPU/CPU code adjustments into the game. Given the Linux nVidia driver is a fraction of the size of the Windows driver I've long assumed there's a lot less "optimized" code being sent to the Linux side than the Windows side. It's interesting to wonder if it is because Linux needs it less or if Windows is still the flagship for "most features"/"best graphics" for nVidia so DirectX gets all the attention.