Anyone who thinks a GoPro is in any way suitable for aerial photography/videography cannot be taken seriously. Not at all what the camera was ever intended for, it's a good robust sports camera, that's it !!
Never done compass calibration on any Yuneec product, ( Typhoon H is my third ), never had any problems. Recently bought a Phantom 3 Advanced while I was waiting for the H to arrive and it has Compass issues virtually every time I want to fly.
Just paid in full for my pre order from Clifton Cameras, they say they will have them by the end of the week. May have to wait until next week for mine :(