I have a new 255 music, only used one week. First week went great, then I charged it for the first time. This coinceded with the software updating to version 14.20 one day prior I think (can't remember if it was the same day or the day prior).
First night after charging the battery lost 50%! Also, after this the heart rate monitor is broken. Now it is a long delay in picking up sudden increases. Before this it was very effective in this regard, now it takes up to a minute for it to register such bumps. I compared to another monitor both prior and after the update/battery drainage, so I know it was accurate before.
This is not during any activity on the watch, I don't use them.
I always have flight mode on, and sync once a day. After the first charging, for the first time it also struggled to sync, where I had to push the sync button in the app 4-5 times.
Any ideas what to do?
I've never had a garmin before, but I've tried to turn off the watch and also do a hard shut down (light button until it turns off).
