heart rate values totally wrong after update 18.22

Has the problem with version 19.09 finally been resolved? I now have version 15.19 and no problems.
However, I would like to use the new functions, but I am afraid that the sensor will once again deliver nonsensical data.

Yeah, this is exactly what makes me abandon garmin products. If you want to build your training around heartrate zones, you need something realiable.

Just ran with my watch on version 19.09 and didn't have my chest strap today. I looked at my watch and it was in the higher end of zone 2 and even dipped up to aerobic when I was doing an easy run that I could do all day. I tightened up my watch and it didn't seem to help, but I could see an indent from the watch band. I tightened d up my watch again and finally the Heart rates dipped. It was pretty chilly today, but this was never really a problem. I can remember it wasn't a problem till I got an update way back in October where it said my HR was 190 during a Marathon. I think this really has been goofed up for many people who count on this being their go to OHR sensor.

https://forums.garmin.com/beta-program/forerunner-955-series/public-beta-bug-reports/i/public-beta-version-19-xx/further-errors-in-ohr-measurement

please give me a plus

It is quite weird as on both of my Forerunners 945 first and now on 955 precision on HR got worse about 1 year from purchase. Up to September 2023 I had not particular issues on HR with my 955 and it was 1 year old. After that maybe in coincidence with firmware updates I got problems from time to time as FW 17.xx were better than  FW18.xx and the worse is the actual FW 19.xx.

Garmin doesn't say if this is because obsolescence of the HR sensor loosing precision after xx months, hr of usage or if is a matter of having added more features in the firmware like Power meter etc and this slows the IC process with result of not precise HR or if is a matter of a bug.

Since this is going on since September 2023 it seems to me not beeing a bug but something else.

Power meter is pretty realistic as raise with higher pace, raise on uphills, decrease on dowhills so I will only base on Power meter eventough we are used to train on HR so this is like a new way of training we need to get familiar with.

HR measures on wrist is not accurate right now so to me is not even worth to spend more time on this. Of course until this gets solved or Garmin reduce the price of their watch I will keep what I have not buying a new one

Hello,

that could also be a theory that it's not the firmware - but the age of the sensor.
I have replaced my watch and have now installed 15.19, which I am happy with. I would like to try out what happens when I install the latest version on a new watch. Unfortunately, I can't go back to 15.19.

I get the high heart rate issue on my 955 when running. It’s only happening occasionally, eg about 6-8 times since getting the watch in January 2024. But it is firstly worrying from a health perspective, then frustrating from a performance monitoring viewpoint, when the HR is suddenly showing in the ‘max’ range and then creeping up to anything up to 220+. Pausing the workout and using ‘resume later’ resolves, but it often then happens again later in the same workout.

I’ve noticed that when the HR is recording erroneously, the respiration rate isn’t giving a reading. The respiration graph shows a straight line connecting data points that align to the start and finish of when the HR data is in error.

My worry is that I always use as chest strap: a Garmin HRM Dual. So I don’t see the HR recording errors are being caused by the wrist sensor on the watch, as my HR data must be coming from the chest strap. So in my thinking, there must be a software processing issue, or the watch is using data from another source in priority over the chest strap data.

Could there be other external sources of signals that is overpowering the chest strap signal, such as passing cars (I often notice it after a car has passed - but that may be because I’ve had to stop for the car and more often look at my watch then!), wireless headphones, or a movement sensor in a phone

When you don't see the breathing rate it means that the pulse is detected by the OHR because it loses the connection to the HRM Dual or because Garmin believes that the OHR data is better than that of the HR Dual 

Thank you for the explanation Piero, that is helpful to know