Took my new P3 Adv for its first flight today and I'm having issues with GPS signal dropping. It's really odd because the entire flight, since takeoff, I had 15 GPS satellites locked, but while flying, I repeatedly encountered my bird's status switching to "Non-GPS". While still saying 15 satellites. After several seconds it would return to GPS mode, and this happened multiple times. Firmware and app has been to updated to the latest. I'm flying in a large park, near an urban area, but separated by the park and a lake. Always flew my P2 here without any sign of issues. If it's due to interference (I didn't think GPS was susceptible except for line of sight to the sky being blocked) it might be relevant to add that I encountered some signal drops of my video feed and control, but that seemed to be distance-related only. I'm concerned about losing both GPS and control at the same time.