Good morning,
I have been reading quite a lot on the topic, posts dating from 2 years ago to more recent ones that are all pointing to the same issue being that the Vivosport optical heart rate is giving inaccurate result for cardio workouts.
Anyone ever found a working solution for this, beside having to use a chest strap?
I could not find any statement from Garmin acknowledging that this is a problem.
Thanks!