Getting 35-45fps in game at the start and with Fast Sync it is nice and smooth! I am chuffed I have to say. Love Fast Sync!
Running 4k with everything on maximum except for following:
MSAA OFF, Shadow set to HIGH, Contact Hardening OFF, Depth of Field OFF, Motion Blur OFF, Chromatic Aberration OFF, Volumetric Lighting on ON rather than Ultra and Parallax Occlusion Mapping on ON rather than Ultra.
So as you can see, with a bit of tweaking one can get decent fps with most stuff on Ultra, the ones that matter anyway. Will tweak the settings some more for the 2nd playthrough
Here are 4 screen shots at 4K, not sure if Imgur compress these, but in game I am happy with graphics:
Might not be able to appreciate them as much on a lower res monitor though
Will post more later or tomorrow as I play the game and come across interesting areas. For now I am off to watch the recap video and start again fresh and get lost in the game until I cannot keep my eyelids open. lol