@tal i found today 3-4 other persons having same or similar issues (one on the bugtracker github of systemd and 3 others on the archlinux forums) starting around the same time (in the last 2-3 weeks).
I dont think its Plasma related (which comes in later on boot I think) but maybe Kernel based - since others started having similar issue around the same time?
Might be related to some usb devices, but if i‘m not alone having ir!?