It's been a while since I noticed Firefox video is laggy on every website. I thought it was about some driver problem but everything else seemed to work well. I downloaded Chrome and it didn't have any problem running any video. I tried clearing Firefox's cache and I tried to "refresh Firefox" on ''about::config'', but it didn't work. I don't have any missing system updates, I'm running Firefox 84.0.2-1.fc33 on Fedora Workstation 33. I don't like using Chrome so your help will be really appreciated. Thanks in advance!