Thank you for the input.
I tested on small both GA aircraft and jetliners(stock only). Same problem occurs everytime.
Also after further testing, i discovered that the 1 fps issue occurs when i switch to fullscreen both in dx9 and dx10(no undocked pannels).
I will continue to search for a solution and post updates.
Edit: I also use sweetFX.
Later Edit: Tested without sweetfx, on dx9 then dx 10, enabled sweetfx, tested again same issue.
Tested full screen with/without sweetfx, on dx10/dx9 still 1 fps.
It seems whatever i do the fps when undocking or swithching to full screen still drops to 1.
Any help would be greatly appreciated.