Not sure when I got the SW 6.30 update but since August 10 my watch started acting strange.
First I noticed that after a full charge the battery drain was massive - 20% for an hour without any apparent reason - I changed nothing compared to before charging. Battery drain stops after several restarts of the watch.
So I did a hard reset (as per this video https://youtu.be/TnH2Np1M5Jw) and it appeared that the battery problem was solved. However, now the watch started shutting off when I start an activity - it does not do it every time so I can't find a pattern. It did it two times last week with Cycling and it did it today in the morning with Running. Battery today was at 45% and it shut off and didn't want to start until I plugged it in the charger.
Is this possible to be SW update? Or should I go and return the watch?