I had also issues after switching to win11.
For me helped:
D2R copie/s Need to be in the System drive.
Uncap fps in Game.
Cap fps in NVIDIA Setting.
„If you have an nvidia card, limit the frame rates at the nvdia control panel to 60 fps. if you do it in game it will slow your load times. If you limit it in the gpu control and not the game, it will greatly reduce the load on the gpu and eliminate the 'kernel panic' like crashes of always being on unlimited frames, while keeping your load times“
