I flew this morning and noticed that my iPad 3 was lagging terribly. So bad that I had a black screen for 30 seconds or so at a time. Never flew further than 150 feet LOS near my house. I then did a flight with a new battery and with my iPhone 6. I have to tell you the iPhone 6 is Rock solid. No Lag, No black screen. The only thing I can think of is the iPhone uses the Newer A8X Chip and the iPad 3 uses the older A7 Chip. I like the larger screen of the iPad mini 3, but now I think I will be using my iPhone 6 for flying.