ok i got a phantom 2 vision it is flying crazy i did a imu calibration but it will hover then just shoot off somewhere it looks like it cant keep a gps lock or it could be a problem it crashed today after i thought i got it fixed
Sounds like a compass issue, hook it up to the software and check it has the latest firmware and see if any errors pop up, it could be that the compass has magnetised and needs degaussing,