Okay uh, a whole right side of my screen is cut off for some reason when I play.
What's your resolution?
1680 x 1050
So what you need to do is tap the ` key in game, type in, r.setRes 1680 x 1050f into the command box, press enter and it should set your resolution to that. Let me know if it works, I just looked that up now on the internet so I have no clue if it'll work.