Ive notice when FPS drops the frame time goes up a lot
Frametime is the time between frames. So 100fps is 10ms frametime. 60fps is 16.67ms.
You can get frametime increases without
framerate changing of course. But if framerate is changing, frametime will.
Framerate changing when you move the camera is kind of normal, because you're asking the game to display something different which might be less demanding or more demanding.
It's not clear to me whether what you're talking about is
a) normal framerate variation that appears excessively choppy because gsync isn't working properly on your system
b) actual stutter due to poor hardware performance
c) stutter due to asking too much of the hardware
d) combination of the above
e) none of the above
From what I recall of your other post (easier if this were all one topic!) it always sounded to me like gsync wasn't actually working properly.