Hey i got this problem for a while now. Not every but some games when i make them fullscreen lock at 2550x1600 resolution. My res at desktop is 1600x1024 so i dont really know how that happened. I just reinstalled windows and it's still the same. I had before and now for a while after reinstall plugged in to hdmi port my tv which could cause this, but after unplugging it it's still the same. It happens with Skyforge and Civilisation V. Both these games were completely ok on full screen not so long ago, and Civ is still ok at random times. Help please.