Komunitné fórum Firefox

In recent months, performance has dropped sharply and I have been unable to resolve using the advice in Help and seeking guidance. I attach the Troubleshooting Information, and a screen shot of me attempting access my Amazon account - 15 minutes and counting.

I have tried multiple options including:

• removal of 25% of software files
• removal of add-ons
• Firefox Safe Mode (no improvement)
• Following performance Troubleshooting guide (e.g. history, caches etc)
• Third Party software (CCleaner Pro) to check Drivers and Software (all up to date)
• Check of SSD Status (92% reported by Windows)
• Task Manager reviews

Seeking your advice and guidance on resolving this (now) painful experience.

Ever since the last update or so (I'm currently on 145.0.2), simply opening a YouTube tab is enough to bring my browser to halt. Looking at the activity monitor on my Mac shows "FirefoxCP Isolated Web Content" using an insane amount of resources, multiple instances of 101% load on my late 2023 MacBook Pro (M3 chip).

Any ideas?

I've used Firefox for years, but recently Firefox is unusable on Mac OS 15.7.2 because it's hogging all the RAM over time. I get a spinning beachball on my MacBook Pro. I look at the RAM being used and it's even over what I have in the computer. I have and always keep Firefox updated to the latest version.

Bogged down, slow: Win11 task manager(TM) shows more FF browsers than reality. Have 11 FF browsers in use but TM says 55 climbing to 77.... numbers vary up & down! but never accurate to what is in use. Attempted fixes: cleared cookies, ' Refresh', uninstall/reinstall. Troubleshooting Information: Application Basics said "Profile folder" click "Open Profile' for FF ...but no FF in that list. Tried 'clear Startup cache' and it jumped to 82 after... so worse. How do I get a true number of browsers open and not these 'extras'. Thanks in advance..

I usually have multiple tabs open and my MacBook slows down and gets hot. Firefox is using A LOT of memory. Is there a way to have inactive tabs go dormant, helping reduce overall memory usage and improve browser performance? An advisor mentioned this is an option in Chrome. Is there a fix?

Thanks

What are your best tips for optimizing Firefox Desktop for daily use, especially in terms of speed, memory management, and handling multiple tabs without affecting overall system performance?

Firefox prevents going into hibernate mode. It only appears to blank screen until mouse is moved or lid moved. This happened on 3 year old dell and now on new lenovo. I've gotten around it by going into task manager and killing firefox before hibernating. This doesn't happen on a newly opened window. I've noticed that as you use it, in the task manager, (not sure of correct term) the amounts of firefox tasks/threads? increases but does not decrease when tabs are closed. Eventually hibernate stops until I kill the firefox program. I thought this might go away with new lenovo with twice the ram, but happens at same rate. If I forget to kill firefox, I end up with a dead battery. This doesn't happen with edge or other browsers I've tried.

(My laptop is very slow. I have cleaned the cashe, performed disc cleanup, cleaned the memory, and everything i can think of. I opened task manager and see that multiple instances of Firefox open. (photo #1) I have uninstalled and reinstalled to no avail. I have also tried changing the preferences to 1 instance, but it wont allow me to. (photo #2) Please help.

The last couple of weeks or so (as of 121025), using Firefox is very slow. Is this another Firefox update issue, or Microsoft update issue, Norton update issue or a combination of different updates that aren't working together as has happened many times over the last few years.

Any known solutions to this new problem?

Thanks

Ron

My computer (pc-windows 10) keeps freezing. Today, when this happened I launched Task Manager and discovered Firefox had opened 68 instances (I had one window open) and was using up 100% of my Core i7 CPU. I was on YouTube at the time.

I'd like to stay with Firefox as I have been using it for years, but this is happening all too often. Is there a way to limit the number of instances that it will generate?

So I'm on Firefox ESR 140.6.0 on debian 12.12 but I've noticed this problem with firefox in general (earlier versions) on Linux. When I am browsing with a few tabs open (4gb of memory on this laptop) suddenly on reddit or some random website, quite at random, everything freezes and I have to restart the laptop.

Crash reporter doesn't start because the tab doesn't crash instead the entire laptop freezes - it happens only in firefox. How do I debug this problem? I think for some reason firefox gobbles up all my memory perhaps and that causes Linux to lock up.

What do I do about this - it is quite frequent and frustrating but random - I can't say exactly when or on what site this will happen.

HI, sorry my English is not so good -hope, you understand me. Since a few weeks I have a problem with firefox: after using the browser without any problem, I close my Laptop by dialing "Ruhezustand / hibernation". When I open my laptop again (regardless of duration), Firefox tabs are "grey", cannot be longer used. I have to close the browser completely and start again, very cumbersom! What can be the problem? IOS is updated, Firefox also. No other browsers have this problem. Hope you can help me? Best regards

Whenever I wake my mac from sleep, Firefox is unresponsive. I believe the app is not dead, just not repainting the window. Sometimes if I 'hide' Firefox window behind some other app window, then bring it back to top, it'll re-paint.

For a while I fixed the issue by disabling GPU usage in firefox. But now, even that isn't helping. Then for a while, removing and reconnecting the USB-C connection to my external monitor would fix it, but now that doesn't help.

Have to quit firefox completely and relaunch. Then the app is working again.

Using Firefox 146.0.1 (64-bit) on Mac (2.4 GHz 8-Core Intel Core i9, AMD Radeon Pro 5500M 4 GB, Intel UHD Graphics 630 1536 MB, 16 GB 2667 MHz DDR4, macOS 15.7.3)

My Firefox for multiple profiles. After opening one and downloading emails it freezes after a minute or two. I have been using Firefox for years, I am using it on a desktop Windows 11 Pro- version 140.60esr. I have donated to Firefox for a number of years. I have gone into the profile and deleted the extension .msf. It did not correct the problem is still freezes. How can I fix the problem. Many thanks.

After an hour or two of use, Firefox keeps freezing. I'm on a new macbook pro (sequoia 15.7.2.) I have removed and re-installed newly downloaded versions of firefox three times now: same issue. At the Apple store they can find no fault.

It just froze again so I had to restart it. The activity monitor (see screenshot attached) said Firefox was taking up 26.9GB - it always does this when it freezes.

How can I fix this?

Selecting "Help About Firefox" causes the window to appear but this window then freezes with no information. It is possible to close the window and continue with Firefox. This happen nearly always but occasionally works correctly. Current Firefox version is 146.0 but the problem is not limited this version. System is Kubuntu 24.04, KDE Plasma Version 5.27.12 and QT Version 5.15.13 I have tried several things. Deleting the .Moziila folder will permit the window to work once but after a restart stops working. Any new things to try would be appreciated.