My Garmin 810 has been tracking rides and picking up segments no problem since I picked it up. Yesterday was an especially thick rain day and while the GPS locked in fine, at some point it stopped picking up the elevation points.
It basically stopped at 414m of elevation (the first steep drop to shelf) and then just slowly dropped elevation for the rest of the ride, even though we had an ~80 metre climb in the middle of it. I'm just wondering if this is a normal fail mode in inclement weather.
The second climb started at just before the 6km mark on this graph. You can see the elevation just slowly drops. Oddly enough the entire track still worked fine, just the elevation was messed up.