I don't remember exactly the date, but I think it started after a update(firefox/windows). The oldest pic I have is from 23/11/20. Firefox was running without no problems, then this started. [https://imgur.com/a/lko72lB Gallery] The problem is High cpu usage from time to time. Making firefox slower and also freezing tabs. It's so annoying. Made me use Edge that runs incredibly smooth, I was impressed( I can even watch media in 1080p with no problem). Then I noticed through the task manager that the 'Host service Windows font cache service' is always present, as you can see in the gallery. I didn't find anything related to that. Tried starting in safe mode, refresh, uninstalled and installed today(24/02) and nothing worked. This is driving me crazy because I love using the browser. '''My PC Setup is:''' Windows 10 Home i3-4130 8GB ram no video card And I use the free avira antivirus.