I have noticed a strange behaviour of my 955 since last firmware update.
I often use the indoor swimming activity (set to 14m), after 10min of swimming I make a 5min brake then go again for 10min swimm and them make again about 11min brake and then go again for 10min swimm. (During the brakes the watch goes automatically to idle mode)
Now, ever time after the 11min brake I start swimming and after several meters the watch crashes completely and make a full restart - I tested this already 3 times so it seems to me as quite a regular behavior.
Garmin, is this issue know?