Within one flight I went from approximately 11 minute flights to 3-4. Have not changed anything. 3 different sets of batteries do the same thing. Running duel batteries using a dx 8 tx with ar 8000 with telemetry. I can watch the voltage being used up. It will be down to 10.2 volts within 3 or so minutes. Red warnings flashing. when its flying or hovering in gps or atti it actually sounds like an engine missing! Not smooth at all. but when I fly it in manual it sounds fine and normal flight times. This is strange as heck. I have checked all the main battery connections and the main power leads to the board. I have pretty much gone through the whole system looking for loose or broken wires. I thought about a bad esc or motor but when its in manual mode everything is ok. only other thing I can think of is a bad rx or satellite (remote) anybody have any ideas I would sure appreciate it.