GPS drifting a lot

my instinct shows 20 miles drift for gps when I click the GPS button outside of an activity. However, during activity, connect app shows accurate GPS positioning for activity like walking. Plz suggest what to do.

  • Ain't you, by hazard, indoors, when doing so? If so, go outdoor to a clear space in a safe distance from buildings, dense vegetation, and other obstacles. Update your EPO / CPE file. preferably with Garmin Express. Wait a minute or two, after getting the initial position.