It's Fixed Now! I just adjust the general sensitivity of all cameras in the game.
I'll give the game another shot tonight, I just tested. Camera does feel a bit better but requires me to put DPI up pretty high as well.
My only real confusion is that it says additional settings should be in-game but there aren't any additional settings in-game. The menu for controls seems to be a bit buggy as it cycles resolutions sometimes and then not others, etc. As well as right clicking in-game causing the camera to stutter back?
Thanks for the quick fix on the biggest issue though. :)