Howdy, So started flying like normal. Landed, inserted 2nd battery, took off and away it went. Northwest like it was in atti mode. I reviewed the play back and I wasn't controlling it till I changed to atti mode and brought it back. Got it hovering over me and switched back to normal gps mode and away it went in same direction. Again, switched to atti mode brought it back.....but this time landed it....lol. It immediately started out with high interference, calibration needed????? So I tried to recalibrate, but it just flat out wouldn't and flashed the lights red on the phantom. Anyone come across this before? I only fly here in the same spot and have 50 or so flights. Never any issues. Any clues?