There was zero adjustment time for me. Everything is just better. Doom looks and runs amazingly. Same with Alien Isolation and Source games. The only thing I've tried that doesn't work in 21:9 is Overwatch - so that's like playing on a 27" 1080p monitor. I thought that would be annoying btw, but honestly don't notice the borders while playing. For me there is no competition at all vs. a 27" 1440p. The ultrawide comfortably edges it in desktop use, even with a lesser dpi, and absolutely slays it in games (as long as you're ok with 75hz). But tastes vary of course and some people like a higher dpi. Games also run noticeably better than on the 1440p. Infact, with my 390x, I've spent far more time trying to cap games from going above 75fps than I have getting them to work in 21:9! Super chuffed with it.