Issue with shaking cocpit view

[shadow79]

short update.
turn off the vsynch in Nvidia
turn off the aero in windows 7
To turn off the aero has a temporarily effect. After switching off I run the game in offline everything runs smooth no stutters (FPS 40-50). After maybe half an hour testing I went to Atag and stutters were back (FPS 30-40). Took a hurri for a ride, but since the stutters keep the same I decided to try another server. I went to Raven... AI and here the game run OK no stutters. After some flying I switched to offline again and stutters were back also in offline mode.
I was reading all kind of threads about clod tweaking, but none from what I tried has real effect on stutters.
Any idea what could be the way out ?
Thanks