VPS is giving me fits

[BRDVPRA]

This error started when I flew one evening. I thought it was due to low light, but that is not the case. At first, I could calibrate the IMU and the drone would fly fine for awhile. Now the VPS shows a negative number before the drone takes off. This could be the grass maybe? When I do take off, the drone does not stop and hover at 4ft. Instead it slows the ascent but continues to climb. The VPS indicator turns red and the sticks have very little use. It is hard to get it to come back down. I will say the sun is bright but low in the sky. The error occurs facing or facing away from the sun. The VPS sensors are saying they are normal. Any help is appreciated.

DJI Flight Log Viewer - PhantomHelp.com

If that is not the correct way to upload the flight log please let me know.

 

[BRDVPRA]

Could this be caused by my extended landing gear feet with springs on them?

 

[BRDVPRA]

Thanks for all the insight. I think I fixed it by removing the extended legs. Again thanks for all the help