My second flight. I was less nervous, but still fly GPS mode only. It locks neatly in place and keeps steady no matter what. Flying circles finally looks like flying circles. One landing was a little bit rougher than expected, but props are fine.
Change of frequency on the Video TX did not change the poor performance, reception is lost in 20 meters. I will have to try a different transmitter.
Counter on the RC transmitter clocked 7:48 minutes of (relative) full throttle, which gives around 15 minutes of flight time. Still the pack had 10.8 V left.