The game does run pretty well on my iMac, (2017 model, with I5, Radeon pro 570, 8gb DDR4 Ram and 250GB flash storage), I haven't had any major bugs or anything, and the FPS has been solid. However the game does read a ton of data, so much that I´m almost afraid of playing for long periods at a time. I'm not sure why the game is reading so much data though.