Hi,
The latest v13.15 update arrived to my watch overnight 2022/11/03-04
Today I got two random restarts, here's how that happened.
1.) I did a short 30 min run in the morning. Completed workout, saved, checked metrics and switched to the main watch face.
5-10 minutes later I was going to choose Cardio: I entered the sports menu and noticed that UI is very sluggish. Tried to scroll from Run to Cardio activity type, the screen hanged,
then I was able to enter a Cardio activity, even my HRM-Pro was recognized and watch connected to it, then boom: black screen and restart.
After restart Cardio and then Yoga activities worked well with no issues.
2) A few hours later I started a Walking activity, after 750 meters of walk I entered a shop and was going to pause my session. But watch showed me a black screen again and rebooted.
After a reboot it offered me to resume a previous activity, I resumed and waited for GPS a bit, then continued walking ~1km, but distance tracking wasn't tracking anything.
Then I saved activity and a previous distance (before restart) was saved.
Battery level was 35% if that matters.