Mostly my Phantom 2 Vision works as advertised and I'm really having fun with it. But occasionally, it gets what my nephew called hiccups. You are traveling forward, at full throttle, and it pauses in hover mode for just a split second, and then continues on again forward. My first thoughts are that this is radio interference - it happens so quickly, that I can't see any message on the phone display. I am on the latest firmware. Should I recalibrate IMU and the compass? Any other things to check? I fly in a suburban environment, so plenty of radio interference sources is a given.