Can you shoot a video of this drift? My craft is rock solid and has been from day 1 and I know that don't help you. I know you said you tried IMU calibration, but my guess is this is you issue on the drift. During the IMU calibration you are teaching your craft what is absolute level.
My recommendation ... turn off VPS, cool your craft below 70 degrees, as quick as you can on a perfectly level surface preform an IMU calibration, calibrate the gimbal ... re-test you craft.
Other than the drift what else sucks?
My recommendation ... turn off VPS, cool your craft below 70 degrees, as quick as you can on a perfectly level surface preform an IMU calibration, calibrate the gimbal ... re-test you craft.
Other than the drift what else sucks?