Same thing happened to me and Ghostery was the culprit too. Disabling it just for YouTube fixed the lag right away. Glad the OP confirmed it, this thread will probably help a few others.
That source-pane idea sounds really useful, honestly. I do a lot of docs reading where I keep the search on one side and open results on the other, and this would make that way smoother.
Honestly I felt the same way when Nova first showed up. I played around with the UI density settings for a bit and it grew on me, so maybe give it a week before deciding you hate it.
Had the same thing after updating to 157, compact mode barely changes anything now. The only fix that actually worked for me was going the userChrome.css route. In about:config set toolkit.legacyUserProfileCustomizations.stylesheets to true, then cre...
Firefox doesn't control search rankings itself, but fast-loading, well-structured pages tend to perform better everywhere, including in Firefox. I'd focus on Core Web Vitals and making sure your content directly answers the user's query. Also test yo...
