5 reboots while trailrunning on F5 with v20.00

Never ever, whatever Firmware I used.

Yes I do have the same issue. I use course navigation while biking and now and then the F5 completely reboots. I don't no how to solve this. Someone has a good answer to this? 

It's happened to me a lot when following a Course, over several versions of firmware. I perceive that it is worse when the watch is "busy" such as also with Livetrack.This weekend I had footpod, LiveTrack, HRM strap, and InReach widget going along with following a course. At one point it was rebooting so quickly that I was having a hard time even getting to menus, but when I went in to Sensors and disconnected InReach, no more crashing that day. But I have had occasional crashes before enabling the InReach widget. Today I had all the above going but no course and there were no crashes in an hour. 

I was following a course too and have the HRM-Tri connected, so maybe you're right and the watch was "busy" some moments and reboots... 

It's annoying because it also disabled my CIQ fields and I lost data.

In my case I make use of a Garmin HRM strap, a Garmin cadans sensor and a Garmin speed sensor. This seems to be to much in combination with loading a course. The F5 reboots at least 5 times during a 2 hour ride. 

Did you get reboots on previous firmwares too?

I also use my F5 on my bike and I was thinking about get the cadens and speed sensors, but I hate when the device reboots...

Yes the reboots happened it's not new. I've only had this watch for about a year it I think it happened even the very first time I tried a course and the firmware then was like v12 or 13. I'll wonder if the number of points in the course plays in to how hard the watch has to work, but it is hard to control. For the most part I think I only need about 10-20 trackpoints per mile and then a few coursepoints here and there (turns, summits...)

I was also on 1 second recording. Next time I get into a cycle of reboots I might try during this down to "Smart" to reduce the cpu load. I've noticed that some tracks with this on are still 1s, but maybe it gives freedom to the watch to go longer if needed.

Settings>System>Data Recording>Smart