Descent MK3 keeps crashing

Over the last month or so my Descent MK3i continues to crash. It has happened during various activities. The latest crash, today Dec 8th, the watch continued to buzz and vibrate until I held the power button down for about 10 seconds. This is probably the fourth time over the last month. I had one that happened after a planned workout and the workout wouldn't upload even though it was on the watch history. On the history page the workout said "Invalid"

I'm running 23.30 software