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@ Blacksimon

Although I am surprised at how much infrastructure you have uncovered that is applicable to zram,
this may be more due to my absence of experience with any form of swap.

In this instance, I think we are at least missing a driver called zram, and/or perhaps a clue like zram.ko
indicating some source material.
Also, I can't see any evidence on /etc/fstab that speaks to swapping of any kind.

I expect we may have to wait for 7.0.1 for the rest of the material to appear.
I'd be pleased to have you show otherwise.