this post was submitted on 25 Sep 2023
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Firefox

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Firefox is unbelievably slow when I'm watching youtube videos (lemmy.ml)
submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]
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I have about 25 extensions (almost all needed) and firefox lags like crazy, it's like I'm watching the videos at 10 fps. I download chrome to test it out and sure enough it runs as smooth as butter. Any help?

EDIT: It somehow fixed itself after I started using LibreWolf (with the same addons)

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[–] [email protected] 21 points 1 year ago

I'd start by disabling all add-ons and check if that helps. If not, there's something wrong with Firefox itself.

If disabling them fixed the issue, I'd continue with a binary search to see if there's a specific addon causing issues. I.e. enable only half the add-ons and re-check. Then continue enabling/disabling add-ons until you know which addon causes the issue.

That said, it could be the combined load, or a combination of add-ons, which is significantly harder to fix.