Try aliasing another panel to the plane and see if it makes a difference. If it does than maybe the workings of your panel are putting too much effort onto your processor.
Rafi where are you flying her from and do you have AI traffic set high? Just this will knacker your frame rates badly and the Citation because of its high poly count doesn't help...
There are two types of aeroplane, Spitfires and everything else that wishes it was a Spitfire!
no....unless you redesign it in gmax which im thinking you cant. hmmmmm maybe you should try flying another aircrft until we can fix somthing....okay not we maybe more like [glb]THEM (mods & such)[/glb]