I have an M1 Max with 32GB RAM. It runs the game at 4K smoothly, even in act 3. I didn't measure the exact FPS but I don't experience any stutter when playing.
There do seem to be some graphical glitches though, especially with character skin, which can appear somewhat pixelated (lacking a better term).
There do seem to be some graphical glitches though, especially with character skin, which can appear somewhat pixelated (lacking a better term).