Went for a run this morning and noticed that the map was way, way, way off. It was as if the watch wasn’t using GPS/Glonass data at all. The starting position was offset by at least 50 to 100 meters and it kept this offset for the whole duration of the activity.
Any idea what might cause this. Yesterday my watch was spot on in the same area. I have never seen anything like it in 8 years of running with various Garmin watches.