I recently purchased a new late 2015 27" iMac with the Core i7 and the M395X 4gb GPU. I've got Bootcamp installed and was able to play Borderlands 2 with no issues. So I install Far Cry Primal and find the default setting at 4K to make gameplay quite laggy. But when I try switching to another resolution the game doesn't take up the full screen, but a window that I don't care for and just doesn't seem right. I was wondering if I could play this game at 1080p full screen some how? EDIT: Sorry - Thread title should indicate Windows and not OS X.