How exactly? Did you measure your VO₂ in the lab, or with another device? Could you share links to two of your activities - the last one where the VO₂max was detected, and another activity where it failed, although you believe it ought to be taken?
.. BTW, you may consider asking the question on the Fenix 6 forum - there should be more users of the same model able to answer, than here on the GC Mobile app forum.
