I get similar issue usually with back to back flights.All of a sudden it won't go higher than 99ft and 50 ft from home location. It complains about changing settings in MC. I look and the settings are 400ft alt and 5000 ft distance. It's bizarre and NOT in beginners mode either.. Only way to correct was to re-land. Power off Phantom power up and DON'T RUSH.Slowly climb to get Green ok on GPS on top bar left side and then it starts working fine again. One time however the gimbal stopped working as well, like a dead stick. Any Phantom movement and the camera would just flop around. Once again landed, powered on and off both Phantom and controller. Re-powered and everything was once again working fine?? ANY CLUES out there.