Had a funny occurrence tonight. Forgot my blue/black 16gb micro sd card that came with the P3A. I thought no problem, I have a 64gb Sandisk ultra XC class 10 as well. Put it in the UAV and off we went. As soon as I snapped my 1st picture, the UAV FPV went black, like it was snapping a pic, but the round white button on the dji pilot app would have that round circle, like it was taking a picture, but it never stopped, just kept circling.. I was only 80 feet up and the UAV was 100 feet or so away from me. Brought it back down. changed cards to a class 10 HC micro card and was off and running. I did not lose the signal with this card, but the picture taking/writing process took longer then the blue/black Lexar Micro that comes with the P3A.