Hi. I've been using the fenix 5x without complaint for 2 years. Today for the first time it froze at a distance (4999m) during an open water swim, but the timer kept ticking. My average pace therefore decreased until I ended my swim and stopped the watch. Both Garmin Connect and Strava had the 4999m mark as the end of my swim. I'm only 6 weeks out from a long distance swim FKT attempt, and this is obviously very concerning as I need the watch for training and to verify the attempt. Any advice very gratefully received. Thank you :)