Phantom 2 wondering like baloon on string after crash in GPS

[StudioKamar]

I'we searched the forums with no luck. I'm having a problem with my P@ after crash. Before it my Phantom in GPS stood like a stone in one place now when i turn on GPS it wonders a bit in circle like 2m wide. Im thinking after a crash is not so stable any more. In Atti it seems fine but it wobbles a little from side to side like it tries to level out then it overshoots and gets little wibrating.

Anybody have idea what happening ?
Compass calibrated IMU Advanced calibrated but it shows that temperature is to high but it completes calibration. Maybe something wrong with gps antena ??

 

[N017RW]

Do you get the two sets of rapid green flashes of rear arm’s LEDs during warm-up before starting motors?
The first set is course heading set and the second is 5+ GPS sats locked.

 

[StudioKamar]

Yes i have. But it take a while. Then when i switch him from atti to gps it starts drifting not standing still for about 2-3 meters. Or maybe more.