Back to non FPV firmware

The previous video was using the FPV firmware. The jumps/jitters were huge and violent. Went back to non FPV firmware for this vid. Starts off with a bad loss of level, then back to the less severe (but unacceptable ) jitters. It seems to be ok if the pitch is level. Im wondering if its a hardware problem with the gimbal. (the pitch changes in the first few seconds are me. )