Strange HR values during CF workouts after update to 10.0

Former Member
Former Member
Hello,

I have been using the Fenix 5 to track my CF workouts with the built-in HRM, not the band. Prior to 10.0, the HR made sense, it increased quickly, and stayed high most of the workout. However, I have noticed that during the last week, my HR (according to the watch) barely goes above 110, which is not possible. I have no change anything (watch position, how tight it is...)

I have read the forum but I don´t see any reported issues with the HRM after the update.

Any ideas?

Thanks!
Alvaro