When I first bought the copter, I flew it for a week without any payload and it flew as far as I could see. Now since the 3D Zenmuse and Gopro are installed, I seem to lose contact very quickly around 100 meters. Is the camera equipment causing interference with the receiver antennas? This is all I can think of. replaced batteries 3 times. Always wait for green light to fly. Always flying in GPS mode. After I lose contact I flip the GPS up and down, and I can quickly regain control of the Phantom 2. Any suggestions out there oh wise ones?