DX11 has significant stuttering. Likewise proton 8.04 also stutters. Experimental + Dx12 mode is the way to go. No issues for me with this setup. I noticed it hitch a couple times at the very start. after the first 2 minor hitches it never does it again for the whole session. Some cutscenes have minor stutter. Nothing that ruins the experience for me. Runs great I have it capped at 144fps for my 170hz monitor. dlss is on balanced everything is on high 1440p. Make sure you use the command PROTON_ENABLE_NVAPI=1 %command% as dlss doesnt work without it it seems.