Cliffs over Dover Problems

[A.S]

Hello all,

i have a very strange problem with COD. I have purchased, donwloaded COD over Steam and tried that twice.
But the sim seems not to work right. Nor can i klick the cockpit instruments and my flight responses are VERY sluggish and deleayed.
FPS-wise all is fine, my system is strong enough to run it easily on max settings.
Any other sim (couple) are running like silk, but this one wont.

Windows 7 64bit.

Anyone any idea what i could do, or similar expiriences?