I tried to fly the Mavic like a racer quad. The control is obviously differs hugely from the real Mode 2. But it's ok, manageable.
The bigger problem is the camera gimbal, that can't handle such speed and turns. Does anyone know, is there any way to lock gimbals to the specified position? The "FPV" mode in settings is not real fpv, camera rotation is synced with right stick roll control. There is still stabilization and pitch hold. Real FPV could be total position lock, like to 25 degree upward.