Strength training - auto count of Reps - 40-50% less

Hello,

I was expected some inconsistencies till the firmware becomes more mature but this a bad surprise for me:

- in a Strength training the auto counted Reps are less by 40-50% -  like instead of 15-20 Reps I get counted 8-10 Reps

I compare with my FR935 which is top spot on this.

Any tips for improving this?