I can't test this because my GPS tracker is blocking the rear of the USB port for the camera. I noticed this when i forgot to turn on my phantom whilst plugged to the PC. It seems to only appear when the phantom isn't on whilst plugged in. Does the USB on the camera allow you to calibrate it? Does this help the crazy gimbals re-calibrate? (i hope so as there are 2 on the forum with this issue). Does the gain increase the tilt speed?