Firefox is unbelievably slow when I'm watching youtube videos
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)
I found youtube videos unbearable as well and I found the culprit to be ambient mode in the video settings. I ended up adding a rule in ublock origin to delete the ambient mode stuff regardless of the setting just to make sure ambient mode is disabled in private windows etc.
This is unlikely to be a simple Firefox problem. Try running Firefox in Safe mode and see if you have problems then (go into the main menu and then help to find the option to run without add-ons).
If the videos play well then it's your extensions. If the videos do it play well then it's drivers or the set up of your device.
I've only had problems with Firefox playing videos on a Raspberry Pi in the past due to a bug with drivers for video acceleration not working proberly. I had the problem with Pi OS but not a full Linux distro on the same device.
the thing is it was running perfectly fine with 40+ addons, I guess it has smth to do with my new gpu? I’m outside rn I’ll try the things the people recommend
Could be any number of things. Possibly a bad plug in or combination of plug-ins. Could be your new video card didn’t jive with your installation of Firefox.
Run Firefox in safe mode and see if the performance improves. If it does, you likely have a plugin causing the issue. From there, disable all of them and reenable them one at a time to see if the problem comes back.
I only have four or five extensions and YouTube videos lag. It’s Firefox. I’ll still not switch to anything else, but I could imagine a clean Chrome without anything added and zero bookmarks purely as video platform.
Can you also watch twitch at 1080p without lag? Maybe you don’t watch it, but I always had problems with that. Chrome works perfectly on twitch but not Firefox
i can watch 1080p content just fine on my geriatric pc (1st gen lynnfield), and even do h264 encoding in realtime or faster (sw ffmpeg), but discord and twitch just flat-out suck on it.
Do you have a lot of extensions enabled?
Is your Firefox updated?
Is xmp or docp enabled so your ram is running at the right speeds?
Is hardware acceleration enabled/disabled in firefox?
Have you tried a fresh firefox profile/install? you could try downloading a beta/dev version and testing with that.
I have like 9 extensions, Firefox is always updated. I don’t know but I have 8gb ddr2 ram (10 year old PC), I don’t think I enabled hardware acceleration. I have not tried a new install.
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 <your distro> Firefox' and see if it works.
Edit: Also codecs, maybe something with the h265 codecs
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.
unfortunately youtube isn’t the only culprit. Firefox just seems laggy in general, the affect is multiplied in youtube and indivious doesn’t 1080p or 60 fps :/
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