@Brad_Olwin
Just noticed that the DC rainmaker review also had examples of not so accurate OHR readings:
https://www.dcrainmaker.com/2023/05/suunto-vertical-gps-review.html
Not sure how helpful it is to just say that something just doesnt work for a specific person I understand if people wear the watch too loose then it might not work as expected. But, in general, it should work for most people and most of the time, right?