Firefox — Fora społeczności

I always have multiple tabs open in my browser. Previously, I could easily open (and switch between) 20+ tabs (I have 16GB of RAM). Recently, after opening five tabs, the Task Manager shows 10-11GB of RAM (88-90%) in use! How can this be? I cleared the cache and history, but it didn't help. I installed several RAM cleaners, but none freed up the required amount. None of the five programs worked. Where does that 15GB of RAM go when I open Firefox? When will you finally implement something like Google Chrome—they free up RAM for active pages when inactive ones are opened. Maybe it's because I have so many inactive tabs that the RAM is disappearing? But I had just as many tabs before, some of them inactive, and fewer than 20 active ones, so I could easily open another 20. And now I can't even open five new ones. What's happening to the browser?! SOS!

Firefox 147.0.4 (aarch64) "hangs" for 30 seconds to 1 minute when I launch it on my MacBookPro (OS Tahoe.26.3). Itwon't open the simple web page I have Firefox set to open when it launches -- and I can't navigate to any other web pages. When I try to interrupt, I get an Apple spinning beach ball until finally, Firefox opens that first page.

After working with Apple tech support, I have disabled a number of content barrier Extensions in Firefox-- which Apple tech support felt might have been causing this behavior. Nothing works. And I hesitate to run Firefox without some of them.

I tried deleting my Firefox user profile from my computer, but all that did was prevent Firefox from opening at all.

How can I stop this?

[edited email from community support forum]

I’ve encountered a problem with Firefox that it fills up the RAM memory to the brim (12Gb) and especially when you’re on Facebook, it doesn’t empty the RAM memory but the data remains, you have to close Firefox and lose your web page, it just fills up, Why, should it be like this, very annoying!!!? :flushed_face: //A-B/Sweden

YouTube playback freezes for a second or two every few minutes.

I have a recording with the Profiler that includes the stutter. It shows a memory drop and some "jank - event processing delay" just before the stutter happens 1m52s in: https://share.firefox.dev/4rzMNyD

My system: Firefox 147.0.3 (64-bit) Win 11 Home, version 25H2, OS build 26200.7840 Processor: 12th Gen Intel Core i5-12450H Graphics: NVIDIA geForce RTX 4060 Laptop GPU

'I am running fiefox version 147.0.3 in MacOS version 26.2. Every second time I start the program firefox tries to take 15GB of memory. The process does not respond (as this is equivalent to more than the memory available plus the swap space). I have to kill the process and the second time the program has standar memory needs. How can I help developers?

Greetings. Am running Firefox 147.0.4 (aarch64) on a MacBookPro running Mac OS Tahoe 26.3. When I first launch Firefox, it sits and does nothing for 30 to 45 seconds, I have it set to open a National Weather Service forecast page at startup, but even if I try to type in a different URL, Firefox won't allow me to do anything --or even quit the application -- until that first web page finally loads. Have tried clearing all history, including cookies and site data, but that does not help. The hangup was even longer until I worked with Apple tech support to turn off some universal add-ins like Content Barrier (Intego) or anything that acted like a VPN. Apple told me the hang is apparently caused by a Firefox add-in or extension. But I can't figure out how to find any or how to turn it off.

In 2024-25 Microsoft Edge gained the ability to limit the usage of physical RAM that the processes uses. Once that limit is reached tabs are put to sleep or are unloaded. So a user of Microsoft Edge could restrict the memory usage to say 1GB or 2GB or 3GB and so on till the maximum available physical RAM.

Does Firefox have such an ability? Is there some flag or settings in about:config that can be enabled for a similar feature to be used? Does Firefox have ability to put tabs to sleep once SWAP is started to be used? Is there some flag or settings in about:config that can be enabled for a similar feature to be used?

If none of one of the above is not available with Firefox then will Firefox add this feature as part of the browser in the future?

There is a stuttering when i browsing, i do a lot of switching tabs when browsing. The stutter occurs at about every 15 sec, the browser like stopped for half a second, doesn't much but annoying. I cant scrolling, it stopped showing next alphabet when im typing, but still registered what im typing. but when playing videos on youtube the videos is not affected. i do running adblock ublock origin, i tried to switch it off, but it doesnt much affect my laptop performance, and the stuttering still there. i have also have tried doing gfx.webrender.layer-compositor set to true on about:config

As long as my computer doesn't go to sleep Im fine. If it does, when i open firefox, i must refresh to be able to find my bookmarks and passwords. What am I doing wrong? Thanks in advance! Micha

Firefox is not responding. Also various apps are not showing/responding. Apps I use every day have disappeared and when I go into the App Store and search for them they are not even listed.

I have a two monitor setup. Since I installed the new AMD driver (26.1.1), sometimes when I play a game on my main monitor, and watch stream on Twitch in Firefox on my second monitor, it can cause the PC to freeze completely. I hear the sound, but the image is stuck.

I tried to disable the hardware acceleration in Firefox, and it seemed like a good solution. But because of that (which is its function), sites became laggy.

Is this a Firefox, or an AMD issue? Or Windows (I'm on Windows 11 25H2)? I will try to install an older AMD driver, but honestly streams had became laggy before the driver update for me.

Hi, I’ve been experiencing slow startup times in Firefox, especially when I have my Time calculator web app open. The browser takes longer to load and sometimes becomes unresponsive.

I’ve tried disabling extensions and changing my home page, but the issue persists. Are there any specific settings or troubleshooting steps in Firefox that can help improve performance when using online calculators like this?

Any guidance or tips would be greatly appreciated. Thanks!

My firefox broswer is starting super slow since the last update. I am on a windows 10 lap top running McAfee anti virus software.

In my task manager there are multiple firefox icons running. See the attached screen shots.

I copied one of the crash report into the note section below.

If any one know show to correct this slow start up pleas let me know.

Thank you Dale

Technical issues After update. I have two computers both of which some problems since the latest Update in February. The microphone won't work on certain apps. One of my extensions are operating as expected and Firefox is not closing all the way or so it's reported. When I go to open up again a new session, it says it's already open but not responding. I have the option close it and then starts right up.

После включения ПК бывает, что я не могу ввести текст в браузере.(как буд-то включается режим только для чтения, что не позволяет текст ввести). горячие клавиши работают, но текст не вводиться только в браузере. Оно само по себе проходит. Как это исправить?

Starting about a week or two ago, I noticed the text of Firefox is grainy. But when the cursor moved, it would get grainy in a different way. So, some letters which were previously unreadable became readable, but other letters became unreadable.

Going to the same web pages with other browsers renders the page readable. So, the problem seems to be Firefox specific.

Even while typing this, portions of the characters on my screen blink in and out.

If there is no solution, I will have to utilize some other browser.

Thank you,

I on MacOS and I'm facing this issue last half of the year. As usual mac book user, I have many WIP items on my laptop, so I don't reload my laptop every day, even months it can leave without reloading.

So, after a workday I just closing it and come back tomorrow. When I back to the work and want to open new tab: Jira, Gmail, LinkedIn any other tabs - FireFox just keeping in loading state. In comparison, the Google Chrome that opened as well all the time but with fewer tabs, open the same links in seconds.

I though the FireFox is not latest version, and updating or re-starting of it, sometimes helped me to fix the issue. But now it seems stopped work either.

So, after a 5 years on FireFox I'm seriously started about my migration back to Google Chrome. I'm not sure that you can help me in this forum, but at least I would like to hear you option. Maybe anyone else have seen such behavior also and FireFox could find the issue