My reported speed is far less than actual

Ahmad5 years ago

I was driving at 120 km/h at certain location, the reported speed by traccar client on Android Galaxsy S9 in the server database is only 45 kn/hr (which equals 83 km/h).

Report show 83 km/h

Any idea how to fix that?

Ahmad5 years ago

I am also getting negative altitude vales (-10 to -14)