`/lib/systemd/systemd --user` is consuming >99.7% of CPU

Lately, I have noticed my system is running real slow, and my load widget is often peaked at 100%. This is out of the ordinary, so I investigated with htop and discovered the command

Code:

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/lib/systemd/systemd --user

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ran by user sddm is consuming between 99.7-107.3% of the available CPU load. It hardly ever drops below 99%. This is not how things are supposed to be. So, I was wondering if this is a known issue?

If the command is systemd, but the user is sddm, does this mean it is a systemd thing or a sddm thing? An sddm issue is easy to fix with the installation of a different display manager, but if it is a systemd issue, I am unsure how to progress.

Thanks in advance for any help.

The wonder (not) that is systemd.....

You didn't say if you were running bare metal or a VM, SDDM runs best with OpenGL enabled, so in a VM allow graphics acceleration.
If your using automatic log in, set it to log in manually instead.
As your using SDDM did you install KDE environment, and did you make sure to include any dependencies it might have needed?