I have had the 2nd 64 gig SD Card give me problems with loss of signal. The 1st time it happened, I scoured everything, not thinking it was the card until I sat back and did some analytical thoughts and realized the card was the only thing I had actually changed. Put in a 32 gig card and all was fine. I order in 2 new Lexar cards, 32 and 64 gig Category 10 and the nice U3 designation and did some flying during the Gentlemen Of The Road Tour we had here in town and the 32 gig was fine and as soon as I stuck in the 64 gig card, I immediately had the problem with loss of signal when it was only 50 ft from me. I just don't believe in coincidences of having 2 bad cards. Any thoughts from anyone. I'm not against just not using the 64 gig cards but it would be nice to at least know why this is. Thanks all who have any comments. Here is the video I created, after which I was tired of the dark and wide range of brightness's and letting YouTube correct it for me. My daughter is a pro video artist and works for a firm that creates interactive digital things for advertisers such as Intel and she just hit the reset button, it did take care of my video issues. Now things are bright all the time. That one took back a little bit.