Yay, finally a comment that is similar to my experience and isn't speculation or kneejerk reaction. I'm enjoying the game at 4k and it looks better than CS now that I've adjusted things. They totally screwed up the default settings, not sure why as it seems like an unforced error. It actually picked a resolution with a 24Hz refresh rate when it first loaded for me. I think their "virtual texturing" optimization also kicks off on first run, making the initial menu experience stuttery and slow.