I have been using the Fenix 8 for about 8 days. First Garmin watch, really like the experience overall.
The stairs count seems to be completely off. For example today, Saturday October 5th, the watch counted 11 stairs climbed. I live on the first floor and climb the stairs twice. I have the original Apple Watch on my other wrist and register 2 floors, same for my iPhone in my pocket. I went for a 5km walk on a mostly flat road (about 12 meters elevation which is 4 floors). But the inclination was never close to climbing a flight of stairs.
Most days, it register around 50% more than my other watch and my personal count.
I tried to do the clean-up and manual calibration on this page on Thursday : support.garmin.com/.../
It didn't change anything. Last night (Friday October 4th) I reset the watch, erase everything to the original settings. I did the software upgrade to 11.86 and clean-up the watch. I went outside to a clear space and started a walk workout and waited about 2 minutes so it could calibrate.
But like I said at the beginning, it doesn't seem to change anything. Is it possible that the altimeter is defective? I know it could happen, I had that problem a few years ago with a watch from another company.
Anyone has that same kind of problem?