Apple Watch Workout App MAP completely busted?

For the most part, the map feature of the workout app has been fairly accurate over the years.

I think the map irregularities may have started as of the watchOS 6.2.5 update. Mind you, I run in a park, often on narrow trails amongst very tall trees, so I know GPS tracking can get off a bit.

The map is showing some mild inaccuracies putting me in places I never ran to what today was preposterous: the map had me swimming in the Sound, circling ferries and running around a ferry dock that was more than a half a mile from where I was actually running. An no, I didn’t go swimming nor can I run on water. It had me finish my run at least a half mile from my start/finish several blocks outside of the park. I never left the park on the run.

One other note: my VO2Max dropped from what has typically been in the 58-60 range, to 44. I’ve unpaired and repaired the watch and will see what happens tomorrow, but I get the feeling something is awry.

I don’t know if the watch is fine, the GPS data is fine, and the workout app is simply not displaying the data on the map correctly, if an update to the watch changed how the GPS data is read and is coming up with errors, or the bug is caused by something else.

Should I reset the watch to factory settings and set up as new?