Similar situation to you. HR monitoring on Versa4 went from bad to worst. I almost never got in moderate while doing exercises. Unlike you, it doesn’t freeze or go crazy high. 1h30 min walk + some jogging will barely get me 15~20 min active.
I have tried multiple ways of wearing the watch. Over, under, closer to the hand, above the bone on the wrist, tighter, looser, no observable differences. This was attempted before as the HR reading was bad, now it’s worst.
if HR is wrong, so will burned calories and resting HR.
