Karma Altitude is off by as much as 30'

[dropgates]

When I'm flying my Karma, the altitude shows 0ft. at take off and stays fairly accurate but within minutes, the altitude is off. In the most recent flight it was off by 30' (I was flying at 60' and the Karma was stating it was at 93'). When I land the drone, the Karma showed -12'. I've reset the calibration twice but doesn't seem to fix the problem. Does anyone know a solution?

 

[BMONEY]

What calibration did you do?

 

[dropgates]

What calibration did you do?

Compass, Accelerometer, and the Stabilizer Calibration

 

[BMONEY]

That's weird, has it been happening all the time or just at that location? could be some magnetic interference where you are flying.