Recently experienced loss of signal episodes between control unit and my Phantom 2 (V 3.06), flying flying over a newly opened museum. I'm not sure why it started about 5 minutes into the flight (very near the building), but a loss of signal and a automatic fail-safe-return-to-home occurred two more times in short ordre on the way back -even 200 ft. away from the building. Could interference from other radio's cause an outage to mine? Other GoPro's running wifi recording skateborders? I did not realize how fast the auto descent vertical speed is. 2 m/s ? http://youtu.be/ytAVLO1FnwY Thoughts?