BUGS:
- Cadence Lock
Issue where HR is locked to your cadence, leading to unusable heartrate values. Possibly fixed by wearing the watch extra tight. Some people seem to suffer more from this then others, but it's a know issue.
- OHR reliability
OHR monitor doesn't adjust well to changes (interval training for example). Has issue in colder temperatures and just general issues (cadence lock or 'values which are way off').
- Custom Workout Alerts
No alerts in custom workouts for custom targets (for example pace or speed)
- 66 HR Lock
Issue where the HR is always shown as (or rather, stuck at) 66 (and some other values, but most often 66). Power reset or turning HR off and on sometimes work, but no guarantee.
- Default to 72 HR
When checking your heartrate it first goes to 72 before actually showing your HR. Could be a design choice, but apparently already marked as a bug by garmin support.
Any others? I'll try to update this post :)
ISSUES?:
- 24/7 monitoring frequency
Because the polling frequency is reduced big time to save battery life the 24/7 monitoring feature is not as usable for quite a few people. A choice for continuous/timed/smart polling would be recommended.
- RHR reliability
Result of the point above... (as your HR is only polled very infrequently it's hard(er) to get a reliable RHR).
Not sure if the 24/7 monitoring for example should be listed as a bug or a design choice/issue,, same goes for the RHR point.