ermo Is the period with 100% CPU utilisation confined to the Solus native Kodi version?
Yes (Flatpak version has this problem too)
Have you set up your Solus Kodi install to scan your media library in the background on startup?
No
Which plugins do you have enabled?
YouTube and Reddit
Have you tried backing up your current config and starting a clean Kodi profile to see if it happens there as well?
I think I have found the problem: Common plugin cache, which is a dependency for the Reddit addon.
https://kodi.wiki/view/Add-on:Common_plugin_cache
When the Common plugin cache service is enabled, right after the system boot I can see this picture:
There is a setting to disable Autostart with XBMC for Common plugin cache service. Looks like it solves the problem 🤔
I can't reproduce this problem on NVIDIA GPU PC.