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heart rate values totally wrong after update 18.22

did a run today with my forerunner 955 (update version 18.22 from today):

first km slow: pace 6:04 min/km, av. heart rate 151

then 5 km fast with pace 4:51 min/km; av. heart rate 133 ?? (my common hear rate at that pace should be 180-190)
a sudden drop of the heart rate appeared approximately at the change of pace

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Garmin-Sierra 5 months ago +33 verified

All,

If you have not yet contacted Product Support directly, please 'vote UP' on this reply if you will allow me to add you to our internal report. I want to make sure everyone is added to the impact of…
Garmin-Sierra 9 months ago +-6 verified

All,

Thank you very much for your feedback so far on the Optical Heart Rate performance. In addition to what is already mentioned in The Heart Rate Sensor on My Garmin Watch Is Not Accurate, I want to add…
Garmin-Sierra 6 months ago +0 verified

All,

Thank you for providing your feedback and activity examples. We appreciate your engagement and are continually improving our products based on customer feedback. If you can, please continue providing…
Garmin-Sierra 9 months ago +0 verified

All,

Thank you very much for the examples you've provided here so far. I'm very sorry that the update did not resolve most of your OHR concerns. In order to look into your individual activities…
Garmin-Sierra 23 days ago +1 verified

All,

Thank you very much for your continued feedback regarding your heart rate data during activities. Since we have released software version 21.19 I am going to lock this thread. Please create a new thread…
Luca 9 months ago +19

I would like to know why Garmin, instead of continuing to offer us copy and paste advice with which it clings to straws, does not fix a recurring problem throughout the forum, if the frequency worked on…
6742038 9 months ago in reply to Garmin-Sierra +14

1. release watches that work absolutely solid and deliver useful measurement results.
2. render them useless by developing buggy firmware with more and more gimmicks and accumulating bugs. Ignore your own…

All Replies

0 swings1940 9 months ago

My heart rate after the update is off. It does seem to calm down after awhile like the picture vincent shows above. I have run a few times without my hrm strap and the heart rate spikes at the beginning. More so than what my hrm strap shows. If you would like examples let me know.

0 swings1940 9 months ago

0 Adrien 9 months ago

I have also the same problems. Yesterday, I went running with 2 watches, my former VENU on the right wrist and my new 265 (sw 18.23) on my left wrist.

265 : Average / Maximum HR : 143/151

Venu : Average / Maximum HR : 168/180. Which are objectively the right figures

So big errors can be dangerous!

0 4977680 9 months ago in reply to Adrien

it was a very quick run? as 168 Avg is pretty high

0 Adrien 9 months ago in reply to 4977680

5,3 km @ 4:43/km. For my age and my level it's a quick run.

0 Pnayebvali 9 months ago

I have had similar issue with optical heart rate. I have had long runs when the heart rate drops to 80s and it picks up 20 minutes later at 160 (before the update in 40F temperature). Also some runs I can tell I am pushing but my heart rate is below my base runs (after update) specially towards the end of the runs. see below for the example of each one.

0 5258636 9 months ago in reply to Pnayebvali

I got thi kind of drops in heart rate as well. I turned on temperature recording for those activities and since then I didn't had the drops anymore. It may be just a coincidence but it's worth a try. I'm not sure if the recorded HR is correct as I don't have a chest strap to confirm.

0 Pnayebvali 9 months ago in reply to 5258636

Just checked it now. Temperature recording has always been on I guess by default.

0 Thom@s 9 months ago

The bad thing is that lately you can't even rely on a chest strap.

0 5407156 9 months ago in reply to Thom@s

Replace the battery in your chest strap. You see this sort of behaviour when it is failing, even if it claims a charge level of 80%.