Fedora 33 shipped with firefox-81. Just recently the first firefox update to fedora 33 landed. That update is firefox-89. It is dead, no, excuse me, it's DEAD and DEAD slow. Youtube and streaming video sites stutter so badly that I'm lucky to get 2-3 frames per minute even if the audio holds up. firefox-89 is also slow on other fronts, no, excuse me, it's DEAD slow on all fronts. I have a large number of windows and tabs and cutting that number by 25 to 30% has no noticable effect. After searching for solutions, the top suggestion was to disable "proton", but no that had only a tiny effect. What are the mozilla people thinking? My guess is that they are not thinking. Another worthy question is, how did this awful piece of software get distributed by the fedora project. Look, I've been using mostly firefox since it's beginning, but come on, this is ridiculous. I downgraded to firefox-81 but now some of my streaming services have stopped working because of an unsupported browser. Additionally, gmail does not work after the downgrade. I know I'm not a loner in this and I know that firefox-89 is not the most recent version to disappoint in a major way. I predict that firefox will be history within a year unless Mozilla pulls it's act together.