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TSS misaligned between 1030 and TrainingPeaks

Dear all, for the last 2 days I am seeing very serious discrepancy between my trusted 1030 and TrainingPeaks when it comes to TSS.

Here is example of my first ride:

And TP for the same

And the second

And TP

This only started 2 days ago until then it was pretty accurate. No changes occurred in the meantime, same firmware - 7.50, same everything.

In general I rely on TrainingPeaks for my analysis, but it's a bit disturbing to see such a big misalignment.

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0 f|33tStA over 5 years ago

same here, i was very surprised on last sunday with my 2h45min ride, in Training Peaks a TSS of 138 and in Garmin Connect 196,1

and of course on friday a 52min ride with a TSS of 49 in Training Peaks and 72 TSS in Garmin Connect, seems there gone something totally wrong, because Training Load is then wrong too!

Anyway, it must be something with more devices, in both cases i record the rides with my new Forerunner 945 instead of Edge 1030 and exactyl same problem!

Garmin-Matthew please can you check with your Team urgently?

my setup:

0 aweatherall over 5 years ago

Do you have the same FTP value in both systems?

0 IceLed over 5 years ago in reply to aweatherall

Yes, that was the first thing I checked. Also the zones are the same.

0 aweatherall over 5 years ago in reply to IceLed

In that case they may be handling the activity time different.

Are you using auto-pause? If you are try switching it off and see if the values then match on your next ride.

I'm sure this came up in the early days of the Edge supporting TSS values. TP uses the elapsed time and the Edge uses the activity time.

0 IceLed over 5 years ago in reply to aweatherall

Thanks for checking aweatherall

Unfortunately that is not the case as the second ride I did completely non-stop.

Here is a link to Garmin Connect:

https://connect.garmin.com/modern/activity/3871973909

and the same in Training Peaks:

http://tpks.ws/FUCESVM3OXJ2LHZ2WGGKPRT3VA

0 f|33tStA over 5 years ago in reply to aweatherall

Yes!

0 aweatherall over 5 years ago in reply to IceLed

The problem does appear to be Garmin Connect.

TSS = ((time in seconds x NP x IF)/(FTP x 3600)) x 100

From Garmin Connect

time is 1:34:33 = 5,673 seconds

NP = 194

IF = 0.681

FTP = 285

TSS = ((5,673 x 194 x 0.681)/(285 x 3600)) x 100 = 73

Looking in the FIT file the value is 72.9

training_stress_score

72.9

tss

So Garmin Connect appears to be messing the value up.

0 IceLed over 5 years ago in reply to aweatherall

Great thanks for the check. I use 7.50, but if I am not mistaken the issue appeared quite some time after installing it, not immediately.

I have a training later today, let's see how it goes.

BUT glad at least it is not only me. . f|33tStA

0 f|33tStA over 5 years ago in reply to IceLed

think it's not Firmware, because have exact situation on Forerunner 945, more ore less Garmin Connect!

0 IceLed over 5 years ago in reply to f|33tStA

Just finished today's training - same thing. I guess aweatherall is spot on - Garmin Connect is the main suspect...

My version is 4.20 running on Samsung Galaxy Note9.

What about yours, f|33tStA ?