Cleared textures, run a repair and forced motion smoothing and now it works.
My guess is it was the constant change between reprojection and normal that caused the dropped frames because in the hornet i never even reached the frametimes for normal and in the FC3 flights i tested i mostly stay above 90 fps.
Seems like Nvidia has better drivers as i never had dropped frames when changing between normal and reprojection on the 3070.
