What exactly do you mean it gets cut off? Does this happen on both the desktop and in a game or just while in-game?
It happens at desktop too, I mean that part of the screen gets cut off so I wont be able to see a part of my mini map and everything else caught in that part.
I searched high and low for about an hour and couldn't find your monitor. Sadly the only thing I can really tell you is to get a new one. It's an odd monitor with literally non existent support. That's the best I could do