> Especially start-up is super slow, takes a couple of minutes at times. Something really unusual is happening then. I'd second trying with a new profile. You

> Especially start-up is super slow, takes a couple of minutes at times. Something really unusual is happening then. I'd second trying with a new profile. You can get general troubleshooting advice at https://support.mozilla.org/en-US/kb/firefox-takes-long-time-start-up https://support.mozilla.org/en-US/kb/firefox-takes-long-time... (disclaimer: i work for mozilla, but not on the browser)