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Firefox is running very slow and hanging a lot.

Firefox App responsiveness
jbr replied
macme
macme

I have been using Firefox forever. It has been running very slow and bugging out especially with you tube on close. I've been working on this for a couple of weeks and am about to give up. My self built system is about 10 months old. Am using a completely debloated MS 11 pro 25h2. Did not ask for AI from Firefox and have disabled AI in Firefox and copilot is long gone. I have tried everything. Am about to quit firefox. Have refreshed firefox and prevented firefox from running in MS win 11 pro "efficiency mode". I usually have to exit firefox with task manager - there are usually 17 instances of firefox running. Mozilla has become Microsoft.

The system: Gigabyte B650 mobo, 32 gig of DDR5 6000, AMD 7700X processor and an Asrock 9060 graphics card with 16 gig DDR6 Vram. All other apps are running just fine. So I don't think a lack of compute is the problem.

Help please! Thanks in advance!

I have been using Firefox forever. It has been running very slow and bugging out especially with you tube on close. I've been working on this for a couple of weeks and am about to give up. My self built system is about 10 months old. Am using a completely debloated MS 11 pro 25h2. Did not ask for AI from Firefox and have disabled AI in Firefox and copilot is long gone. I have tried everything. Am about to quit firefox. Have refreshed firefox and prevented firefox from running in MS win 11 pro "efficiency mode". I usually have to exit firefox with task manager - there are usually 17 instances of firefox running. Mozilla has become Microsoft. The system: Gigabyte B650 mobo, 32 gig of DDR5 6000, AMD 7700X processor and an Asrock 9060 graphics card with 16 gig DDR6 Vram. All other apps are running just fine. So I don't think a lack of compute is the problem. Help please! Thanks in advance!

All Replies (3)

jbr
jbr
  • Top 10 Contributor

Look into disabling Norton 360 and its "Safe Web" features and similar connection hogs.

Then follow Use Troubleshoot Mode in Firefox to guide you through several steps eliminating addons, video drivers etc. to see if some of the steps have effect.

macme
macme Klausimą uždavęs asmuo

Thank you for your 10,000 millisecond reply.

Firefox is over.

Better options abound

Enshitification rules the day.

So here's to bubbles...

Cheers!

Mike

jbr
jbr
  • Top 10 Contributor

You're very welcome Mike. The reason for the tried and tested steps in the article is to bisect the infinite amount of factors (since this whole is self–serve), and follow up with when any of the behaviors changed (or not), to look into next steps.

The most frequent performance issues are with 1.) media sites scanned by external security software, 2.) addons like adblock interfering with the site scripts beyond breakage.

Glancing the submitted troubleshooting profile, these are the first two things to rule out. You don't have to do it of course, feel free to browse the docs at your leisure to find any step that you think might be most relevant to your setup to verify individually.

If you feel like this is "below your expertise", and wanna jump right into bugzilla reports, there's a few YouTube–related leaks specifically on high–powered systems you might wanna follow or help debug yourself. (Suppose you'll find yourself the applicable ones. If not, I can look up some recent ones.)

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