Was able to play yesterday by turning off vertical sync but now it doesn't work. Vertical sync is still off but it's like the game found out how I figured out how to play and decided that it wouldn't let me play that way anymore. My computer hasn't been turned off since I exited the game (big mistake on exiting the game) so I don't know what could've changed while I was sleeping. Any suggestions appreciated. Thanks in advance.
Specs: Win 7 64bit GeForce GTS 450 drivers up to date. Ran in compatibility mode for Vista SP1.