Maintaining on Fenix 7 Pro...

When you increase the number of training sessions, your training status score increases and becomes productive even if your vo2max remains stable.
In this period you have certainly made the number of training sessions stable.

same here with various intensity runs over the last 4 weeks.



I think it's because VO2max uses data from activities from previous days, or weeks. Makes it too stable.
I have posted a report in the beta thread (even though it's not specific to beta software). Maybe Garmin will comment :)
VO2max algorithm not enough sensitive to change - Public Beta 17.xx - Fenix 7 Family - Public Beta Reports - Garmin Forums

My situation is quite similar, but it is consistent with my workouts.

Vo2max has not changed in 4 weeks.
But when I increased my workouts, he became productive again.

I agree with you about the vo2max fluctuations and I suspect that the algorithm for Trailrun sessions is not yet mature and for this reason the vo2max always seems very stable for me.

In my experience the only way to stay productive is to have  your training load in that upper green range of your acute load.  the problem with this is your acute load range will increase over time so you have to work harder and harder.

Woke up this morning to see I am productive again - does not see to make sense based on the the other metrics so I am assuming this is based just on the Vo2max figure for some reason which is now 58.48 - although that hasn't made a difference before!

Sounds like a great way to get injured

It's a little unusual.
Do you only have the Fenix 7 for training?

Yes - only the 7 pro and I only run. No other sports.