Hello,
I started early access on some medium/low settings on my Macbook air (i5, hd5000 gpu, 128gb sdd), and it worked pretty well in prison, but when I got out of the prison game became unplayable.
Character is only visible in the bottom left part of the screen and the rest of the screen is just the last shown windows (for example loading character screen) and when I "move around" all that is just leaving traces and blures, completely unplayable!!!
Common, fix this please, I have seen other people reporting this same problem on the net now, on mac book airs.