I've had "similar problems" but not with DJI. This could be totally wrong but my advice is to recalibrate your GPS and compass away from wifi and metal or electromagnetic objects. If that doesn't work there may be something attached to the Drone (which, btw?) That is causing interference- like a camera, gimbal motors, who knows. If you're using something RTF, my best guess is it's defective, either because it came that way or it crashed and needs, at least to be recalibrated. This may or may not be true. It's just what I would think based on my slightly limited, but adequate experience.