horizion

Hi, Hope for some advice.... When I try to capture shots travelling diagonally (up & left/right). The horizon is really out of level. I'm flying a Mavic 2 pro and it is new, never crashed etc. I've calibrated the gimbal but doesn't seem to make any difference. I've added an example video below...

This started happening to my Mavic Pro about a month ago and seems to be getting worse. When I maneuver the drone quickly I get this gimbal flop. It flops in the direction of the turn (or yaw). I've calibrated the gimbal and it's still doing it. Anybody have any experience with this? I'm within...