Just a bit out of lockdown (UK) and out to play with my Core. All going well apart from one thing. I fitted a GPS 3 to one of my models mainly to get altitude and speed telemetry. It connects fine (solid green LED on the device) and the widgets are set up and showing data . I did lots of flight testing with a friend, he watched the screen and the readings just don't seem right. I tried it in Metric and Imperial and the data was weird - heights way less than actual, speeds much higher than expected (100 mph plus landing speed!).
What am I doing wrong,?