I guess Ill be my own test subject in case anyone is curious but just doesnt know..
iMac 27" 2017 w/ 4.2GHz i7, Radeon 580, 16gb RAM, 2TB Fusion:
I ran it half resolution 2560x1440, on high - It was the recommend setting in game and on forums people discussed using this resolution for other games- I did not attempt to push it any higher. Beautiful unprecedented smooth results for a Mac, load times were a 60 sec max but just sitting there it seems like a little bit. Fan was quiet but ran occasionally. Cut scenes were incredible but sometimes not grainy but a little almost laggy or jagged in an minute indiscernible way. I understand that my model is pretty beefy compared to others, would still like comparisons!!