Brand new watch. Previously used the forerunner 935 when it suddenly developed the same issue, where it wouldn’t maintain heart rate during workouts. Specifically during a run, which made it very difficult to run to heart rate zones.
I had never had this issue before but it persisted for a few days so I ended up buying a new watch, assuming the other was older and failing. Now I have the same issue with my brand new 965. Does anyone have any ideas or troubleshooting?
Thanks!