Alright, so my monitor has a 5:4 aspect ratio, it's 1280 x 1024. I have been experiencing vertical stretch issues, such as the top and bottom crosshairs being stretched longer than the left and right.

How to fix

Same problem for one of my computers, which has a 1280x1024 native display.

Why are the resolution options in the setup so limited?

When I try to play at any res and use the pip-boy it's really zoomed in and I can only see a portion of the pipboy's screen.