It is also first in the Distrowatch rank
https://distrowatch.com/table.php?distribution=cachyos
I distro hopped to it from Bazzite a couple of months ago, and I could not be happier.
If you try the installer, be careful when selecting multiples DE/WM as the conflicts were not listed anywhere for the installation process.
Picking a single environment and then adding the others later was what worked for me.
Yes but my previous OS had zram setup as well, unless PopOS was using a worse compression algorithm, zram was not the main player here. Also there is no such thing as zram for vram unless you are talking about hardware compression.