[citation][nom]mousemonkey[/nom]16:10 = 1680 x 1050 & 16:9 = 1600 x 900.[/citation]
16:10 is taller (more vertical pixels) than 16:9 at the same width. At the same height, 16:9 is wider than 16:10. Essentially, 16:10 is more square and less wide.
Vertical sync always turns itself on when re-entering the game. I have to put it back to off, for D3D Overrider to work properly.
Mouse sensitivity becomes high (even when it's showing 1 on the setting). I set it to 2, then back to 1, and it's good.
I'm sure there're more bugs. But it's bearable so far.