Why is the engine frame-rate limited?

[SHODANFreeman]

I can't tell a difference between 30 fps and 200 fps, so I don't know why limiting to 60 would ever matter, but anyway ...

If you're using Vista or Windows 7 and it won't let you turn on VSync, try running the game as administrator. 99% of problems I've had in Vista/7 are solved simply by running as admin.

Hope this helps.