[kworker]

If you use it with every basic extension, like Kubuntu's default setup, then it's really bloated (Akonadi and MySQL is a dependency for KMail), but thankfully it's highly modular and enough fast for my taste.

[laumars]

I’ve not used Kubuntu in years but there was a time when it was consistently running 50% slower than every other KDE orientated distro (and some distros that were DE agnostic too).

I think Kubuntu did more harm than good for people’s perception of KDE.

[bmn__]

Akonadi supports at least four DB engines. To combat bloat, select the SQLite dependency instead of MariaDB/MySQL.

I wish there was the option of not installing Akonadi, but apparently it's not possible any more to run sticky notes and feed reader without it.