Um, I have a 4k monitor and I'm playing in 2k and not only does it boot up and run well in full screen when in 2k I have never had a crash and I've played it for almost 100 hours with all settings at their highest. I have seen some visual bugs though and I seem to have broken one quest, but I know what I did and will rectify that on my second playthrough.Super awesome to see a modern game NOT EVEN HAVE A FULLSCREEN OPTION. WTF? I don't want to play in windowed mode, and if I want to lower resolution from my native 4k, I have to play it in a window in the center of my desktop? WTF is this?!