One of them is the repeat keystroke option in windows. When I disable this I no longer have any jitter when I hold W to walk while panning the camera in my garage.
http://ask-leo.com/how_do_i_turn_off_keyboard_repeat.html <--------Instructions here
 
For those of you who NEED vsync. Every time you launch the game you have to go into the game settings and manually change your refresh rate twice. This will get rid of the issue where vsync switches from 30 to 60 and nothing in-between.
 
 
THIS GAME IS AWESOME!
 
 

mistermister
Turning vsync off in-game, and using vsync (I like adaptive) via the NV control panel works too.

I like adaptive too but there are some areas of the map (typically wherever there are lots of large pine trees) where I cant keep 60fps. I only use adaptive when I know I'm going to stay well above 60 fps because I am using a TV as a monitor so the screen tearing with vsync off is unbearable. 

I didn't notice any difference in performance between NCP vsync and in-game vsync so I am using in-game vsync. With NCP Vsync you cant disable it while in game if you want to check your frames.

fubarhouse
Performance is significantly better on a single GPU.
 

Wait, what? You are kidding... This is why I have not bought into the SLI/Crossfire BS in years.