Quick Fix: High Single Core CPU Usage of avahi-daemon
It's related to ratelimit being to high try lowering it
sudo nano /etc/avahi/avahi-daemon.conf- find
ratelimit-interval-usec=and set it to500000 - find
ratelimit-burst=and set that to500 - press
ctrl + othensave - sudo
systemctl restart avahi-daemon.serviceto restart avahi daemon