A few weeks ago,when I was taking off over a snowy area, the S2 would not climb above 15 or so feet. I figured it was the snow that was so low on contrast that it couldn't figure out how high it was. I flew it back and forth and after a few times of that, ot would climb normally (I use Controller). Then a few days ago, I was not taking off from a low contrast area and I had the same problem, wouldn't climb past 15 or so feet. Again, I flew it back and forth a few times and the problem resolved and t would climb. Anyone else have this issue?