Incorrect GPS data

[g82m4]

Hello!

I am using Dual XGPS160 SkyPro Bluetooth GPS Receiver with iPhone and TrackAddict.

I am facing two problems:

1. The GPS is reporting I am off the track, when this is not correct
2. The speed being reported is fluctuating wildly between 0 MPH to 100 MPH within a second, that's physically not possible

Has anyone else encountered this issue? See photos attached.

I don't see these problems when I use the internal iPhone GPS.

Thank you!