Hello,
Seconding my first post about OHR problems on several 5 and 5X Plus models, here is a simple protocol that can help to send feedback to Garmin, no matter your watch model.
Watch model :
OS version :
Deactivate OHR
Reactivate OHR
Measure the time needed for the reading to appear on the heart rate screen
Do that ten times, calculate the average time to display the HR and write the results below
Here is what i got with my Forerunner 935 :
Watch model : Forerunner 935
OS version : 9.60
OHR reading 1 : 10,79 seconds
OHR reading 2 : 14,76 seconds
OHR reading 3 : 9,48 seconds
OHR reading 4 : 13,72 seconds
OHR reading 5 : 10,25 seconds
OHR reading 6 : 9,19 seconds
OHR reading 7 : 21,16 seconds
OHR reading 8 : 11,26 seconds
OHR reading 9 : 8,36 seconds
OHR reading 10 : 10,60 seconds
Average OHR reading time : 11,96 seconds