All Products Community Forum

Hi,

I have been using firefox for a while now and realised there is this annoying performance issue tied to my laptop, where firefox keeps freezing randomly while switching tabs or scrolling. It doesn't seem to happen on my desktop pc, and browser such as edge and chrome doesn't have this issue on my laptop, so I am confused as to what is causing it and how I can fix it.

My laptop specs are as follow: GPU - RTX 2000 Pro and intel arc 140T RAM - 64 GB LPDDR5 CPU - Intel core ultra 7 265H

Hello, Might the "do not sell" signal (that firefox offer to send automatically to website) slow the browsing please ? I can't figure out if it is a whole request to send in addition or just few bit more in the initial one, or something else I don't have in mind. I'm currently struggling with lots of tabs slowing my computer, even paralyzing the mouse . I try to optimize as I need to keep my tabs, but I don't what is the best way to manage that. Are the tabs less expansive than using windows, for the memory ? Could the groups of tabs lighten the storage ? Is it better (and more usable! ) to bookmark or add to "the task bar" when we just need to keep the adress to use it later ? Actually, is there a doc already answering to that please ?

I hope you might understand my bad english and that sometimes, we can't find other way than keeping too many tabs.

Thank you, Erin

Hi Mozilla team,

I’d like to report a serious issue with Firefox lately. The browser has been performing very poorly and frequently becomes “Not Responding.” In many cases, websites fail to load properly or get stuck indefinitely, even though my internet connection is working normally.

I’m experiencing these issues on the latest version of Windows 11 with the latest version of Firefox. This has become quite frustrating and significantly affects my daily browsing experience.

I hope the Firefox team can investigate these stability and website-loading issues and provide a fix soon. Firefox used to be much more reliable, but recently the overall experience has been very disappointing.

Thank you.

Firefox has been running very slowly and sometimes becomes choppy or freezes when I browse. I would like help figuring out what is causing the problem and how to fix it. I am using Firefox on my iPhone.

Hi,

Whenever I try to upload any sort of file, the file explorer pop up thing opens, and then freezes. This doesn't happen with any other application, just Firefox, and it happens across websites. Eventually the window freezes long enough that you get the 'close/wait to respond option', and then it closes. Firefox itself doesn't freeze, just the file picker. Nothing ever crashes/closes unexpectedly, and there's no crash reports in the about:crashes thing.

It's not super urgent because you can copy and paste most files but it is frustrating. Any help would be very appreciated.

Thank you

I started noticing that Firefox was giving me a lot of "not responding" freezes the past couple of weeks. The past couple of days I basically cannot access Firefox at all - constant, immediate freezing. I have tried uninstalling/reinstalling (multiple times), disabling hardware acceleration, running troubleshooter mode (still freezes! if it opens at all!), deleting profiles, restarting my computer, etc. I've done just about everything I can find online about this issue. Nothing has worked. I have no issues with Chrome or Edge.

Any suggestions??

Overtime android seems to balloon in storage size.

I tried deleting history and data inside the app, it lowered slightly then shot back up.

I does not always go up, seems i can go days or weeks wothout a noticeable increase, my guess it is happens whenever android is managing stored memory on apps, i recently restarted and it grew again.

I have tried remote debugging over usb on a mac and could not find anything taking up any amount of data that would account for this.

I dont really know what to do, i would like to avoid uninstalling the app and manually readding pw thing or gaving to save them to firefoxs cloud save. Eventually i will have to as phone storage is getting very low.

I mostly just watch YT on a regular tab, and browse the web in private tabs. I have ublock , no script, video backgroundplay fix as enabled addons, if any of that helps. None of them had a big memory footprint in remote debug.

Ever since a recent update, my animated wallpaper for Firefox only plays one frame, and then freezes. If i switch or refresh tabs sometimes it can trigger the GIF to start playing normally, but 90% of the time the background stays frozen, I don't think this issue is related to my PC because the wallpaper was working fine before the Firefox update, and I'm having the exact same issue on my laptop too.

When using the browser on the newest update on the android app, I am unable to interact with pop up menus, such as when I want to change the options of a search, and I can't give websites access to my camera because the allow pop up button doesn't work, the only thing I can do is tap off to the side of the menu to make it go away. The only fix to this I found was installing an older version of Firefox, ver 150.2 specifically.

I’m experiencing a strange issue on Firefox where a separate blank/dark window briefly appears over the browser while I’m browsing, then disappears.

The window appears to have the Firefox icon in the top-left and what looks like a Firefox tab/address-bar interface, but there is no visible text or error message.

It happens randomly while Firefox is open, including while watching YouTube. It does not appear when Firefox is closed.

Troubleshooting already performed:

• Windows 11 cloud reinstall using Remove everything
• New Microsoft account
• Defender Offline scan clean
• Multiple malware scanners clean
• Malwarebytes Premium installed
• uBlock Origin (only extension i use) removed/tested, but the issue remained

I took a picture showing the window appearing. Is this a known Firefox issue, background Firefox process, or something else?

On iPhone when I select address bar Shortcut Icons are displayed but if I select one screen freezes and needs to be closed and restarted. Started failing this week and consistently fails. Reinstall had not affect How do I get shortcut functionality back?

Recently (past few weeks) I’ve found Firefox on my iPhone (iOS 26.5.2) has stopped loading. I’ll open the app and it won’t load the page at all. It also doesn’t let me reload the page, add tabs, or close tabs. Occasionally it will fix if I click a link from an SMS or something that then opens in the app. Quitting Firefox doesn’t work, restarting my phone also doesn’t work.

Hello there,

I realized that quite often when I restart Firefox (Developper Edition) and restore my previous session (latest occurence with 46 tabs), the window becomes invisible. It still exists, and I can even see it in the Window menu list pointing to my latest tab but it's nowhere on screen. I can add/navigate through/select/remove tabs using the keyboard, I can see them listed on screen when I Ctrl-Tab but the whole window remains invisible.

It'd be great if someone could help me out.

Best regards,

Emmanuel

I’ve noticed that Firefox gets noticeably slower the longer I leave it open. Pages that normally load quickly start taking several seconds, scrolling can become a little laggy, and sometimes a tab will just sit there before responding. Closing and reopening Firefox fixes it for a while, but the problem eventually comes back.

I’ve already tried clearing the cache and disabling a few extensions, but I still see the same thing. I usually have quite a few tabs open because of work and research.

Is there a setting or troubleshooting step I should check to figure out what is causing this?

When I login to Fidelity site, my username is displayed one letter at a time with noticeable delays. It started about 4 weeks ago. I noticed Remote Procedure Call was active with 4% CPU. I disabled remote access. The issue went away for 3 days, but has resumed today.

Is my FireFox hacked?

I changed browser to Microsoft Edge. The problem went away.

Hi, I am using Firefox For a few years, but for last 1 year my workload is high and I usually need to open several tabs. After I keep tabs open for a while, firefox becomes slow. Closing a few tabs help but I want to know what is causing it. IS there a way to check which tab or extension is causing it? I am using latest firefox on windows 11.