This is really needed.
ZRAM, while it’s fine for really light workloads, starts to crumble as soon as it’s full. This makes 4Gb systems unusable with anything more than a web browser open.
Zswap provides the same advantages of ZRAM (compressed memory), while still being able to use disk based swap when RAM is full.
See this for more informations : Our swap situation isn't ideal (#552) · Issues · KDE Linux / KDE Linux · GitLab