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 Yoru@lemmy.ml to c/firefox@lemmy.ml
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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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[–] ThankYouVeryMuch@kbin.social 3 points 1 year ago* (last edited 1 year ago)

As they said start disabling every add-on. If this doesn't solve it, it may be an issue with hardware acceleration. I remember some installations where Firefox wouldn't decode video on the graphics card by default. Do a duckduckgo 'hardware acceleration \ Firefox' and see if it works.

Edit: Also codecs, maybe something with the h265 codecs