I was reading earlier about the Geofencing 2.0 DJI put out recently (to keep up to date) and in the introductory video, DJI recommends you calibrate your compass before every flight. I keep getting contradictory info from people between is and it isn’t necessary. Although many of you have brought up some great arguments, I would like to know the specific reason why DJI insists in calibration before takeoff.