I was following my training programmed on the EPIX2, monitoring the hart rate with the belt HRM+ (the white one) , and listening music using Spotify, at some moment the pace/distance announcements where not anymore speaking fluently, and the music as well started to "jump"... then... silence, clock screen went black and restart with the EPIX word on it. By the way it collected back the activity, but obviously there are missing part in it.
Battery where 95%
is it too much for the device? i do not wanna believe so