Nvidia Performance Tweaks 24% Boost in Performance.

[raelgun]

If you have Vsync on by force in your drivers, any drop below 60 will drop it to 30, and once it gets to 60 it stays there, if you take of vsync, you should get a smoother experience but maybe some tearing, if you are running an nvidia card, put adaptive vsync, and then in game, unlimited cap on frames, this will keep the game at 60, and it wont drop to 30 if any dips.
adaptive vysnc basically turns vsync on and off depending on the frames.

[Alahra]

I made the first tweak and I saw a very noticeable uptick in performance with DX11. Thanks a ton for posting—I'd needed to run in full screen mode (which isn't ideal for me because I compulsively ALT-TAB) since switching and now it looks like I may not need to.