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Firefox is extremely slow outside of safe mode, even with a refresh, a reinstall, and disabling of hardware acceleration

Topic title covers most of it. Basically: A few days ago, Firefox started running extremely slowly. Tabs take considerably longer to load, the browser becomes laggy when … (read more)

Topic title covers most of it.

Basically:

A few days ago, Firefox started running extremely slowly. Tabs take considerably longer to load, the browser becomes laggy when it tries to load anything, and attempting to open multiple tabs at once leads to Firefox becoming completely unresponsive for some time.

Attempting to refresh had no effect. Safe mode made it run at full speed, but disabling all add-ons did nothing under normal circumstances. Disabling hardware acceleration caused Firefox to go from "unusable" to "frustratingly slow". Disabling WebGL had no appreciable effect. Installing new drivers for my processor and graphics card had no effect. Restarting my computer had no effect. Removing cookies had no effect. Clearing the cache had no effect. Disabling Sync had no effect. Reinstalling Firefox by renaming the old install to "Old Firefox" had no effect.

I'm using Firefox 46.0.1, 64 bit.

I can't provide info on my plugins right now, as I'm posting this in Chrome because of how slow Firefox has become.

A speccy snapshot of my computer is right here: http://speccy.piriform.com/results/vUlsCY1KK83gUZAKOebuwys

Please help.

Asked by Mr_Crow 4 years ago

Answered by FredMcD 4 years ago

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Firefox Starts and then Closes Shortly After it Starts

With FF not running, I'll be using my computer and FF will open to an empty page... and maybe 30 seconds later it will close. This happens at random times. I've looked … (read more)

With FF not running, I'll be using my computer and FF will open to an empty page... and maybe 30 seconds later it will close. This happens at random times. I've looked through Sync & Auto Update settings and do not see any controls established by FF that would allow it to run autonomously. Any ideas?

Asked by Aughlyeechimran 3 years ago

Last reply by Aughlyeechimran 3 years ago

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Firefox slow and laggy after updating to Firefox 51

Hello, I have yet another problem to talk about. Today, I updated from Firefox 50.1 to Firefox 51. It's been really slow and buggy ever since. Can anyone help me on the i… (read more)

Hello, I have yet another problem to talk about. Today, I updated from Firefox 50.1 to Firefox 51. It's been really slow and buggy ever since. Can anyone help me on the issue? I would really appreciated it.

Asked by sabbath99 3 years ago

Last reply by cor-el 3 years ago

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Context menu opening delayed by about 5 seconds

I was using my computer a couple of days ago with no issues, shutdown the computer for the night, then the next day there is a delay for the context menu to show up after… (read more)

I was using my computer a couple of days ago with no issues, shutdown the computer for the night, then the next day there is a delay for the context menu to show up after right clicking in both Firefox and Thunderbird.

Aside from installing a few updates I have not made any changes to the computer since the day before & I have no issue with context menus in other browsers or the OS.

The hardware a Dell Optiplex 790 with an i5-2400 quad core, 12 Gb ram running Ubuntu 17.04 64bit.

The symptoms:

- The right click context menu takes approx 5 to 8 sec to show up. - Drop down menus on web pages & in settings behave the same. - Occasionally the FF window will darken for a second or two then return to normal. - When an option on the context menu is clicked it is taking about 3 sec to go through.

Fixes tried:

- New Profile. - Safe Mode. - Disabling Hardware Acceleration. - Complete removal of FF & TB as well as their folders. - Downgrading to FF version 50. - Checked on another computer (this one is running Lubuntu, & does not show the issue).

Does anyone have any ideas?

Asked by Dr Jekell 3 years ago

Answered by Dr Jekell 3 years ago

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Firefox crashes

When in Yahoo accounts, Firefox freezes when opening a new window (not a new Firefox browser). This problem does no occur when using a different browser. I am using wind… (read more)

When in Yahoo accounts, Firefox freezes when opening a new window (not a new Firefox browser). This problem does no occur when using a different browser. I am using windows 7.

Asked by RonStein 3 years ago

Last reply by FredMcD 3 years ago

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Firefox Won't do Anything

I had been having problems with firefox since a few months ago. When I opened it, it worked really good, but two or three hours later it got reeeally slow, and when check… (read more)

I had been having problems with firefox since a few months ago. When I opened it, it worked really good, but two or three hours later it got reeeally slow, and when checking the Windows Task Manager it said that Firefox was using about 2.5 RAM GB and I had to restart Firefox. The real problem started when I got sick of the previous issue and tried to fix it. and what kind of fixed that problem was refreshing Firefox (reinstall it didn't worked and I say "kind of fixed it" because only made the problem to take a bit longer).

I was so happy that I got like 5 hours on Firefox but then it got slow again and tried to restart it but... Firefox didn't do anything, just kind of freezd in the start (see image below). In this stage, won't even try to load anything, if I type an address and press enter, it won’t do anything, I can open the menu and open tabs, windows and private windows but all of them are the same. The only way to close firefox is by this menu (the X button in the top right corner doesn’t work). I can’t even load the add-ons page, nor the settings page. I have access to the help menu to refresh firefox but that fixes the problem only for one session (if I close and/or restart firefox, the problem returns).

I tried all what is said here: https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems but didn’t work or worked just for one session (reinstall, refresh and new profile solutions work for a single session, but the problem with the RAM persists, doesn't even work with safe mode).

I tried the solution given here: https://support.mozilla.org/en-US/questions/1021896 but won’t work not even for a single session. I neeeeeed help! Thanks!

Asked by Raaul 2 years ago

Answered by FredMcD 2 years ago

  • Archived

Firefox gets super slow after a while of using it, have to close it every x amount of time..

It really seems like some kind of memory leak... always happens, it seems related to videos/ youtube, I have currently nearly 600 tabs open, but I read on a forum a guy h… (read more)

It really seems like some kind of memory leak... always happens, it seems related to videos/ youtube, I have currently nearly 600 tabs open, but I read on a forum a guy have 1000 tabs and it runs smooth, so something is really wrong.. I got a 6600k overclocked at 4.5ghz and 16ghb of ram@3200 so it's not the hardware, also I'm running chrome in the same time, and even when my CPU reaches nearly 100% chrome runs smooth.. I have to close it and reopen it every time it's so annoying.

Would be nice to get some help.. I also tryed to disable all extensions, still had the same problem, right now I disabled kaspersky for the browser, it's not helping, something is really wrong with firefox.. I tryed to do a refresh.. HELL.. I even tryed to reinstall it !! and still got the same problem..

At this point if I can't figure this out soon I will be using stricly chrome..but I like firefox better, and all my shortcuts and bookmarks are there also

Asked by realstrongforce 2 years ago

Last reply by realstrongforce 2 years ago

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How to increase performance

Firefox v55.0.3 64bit is extremely slow in loading pages (so slow that I'm using IceDragon in most cases). I looked up increasing performance by using Hardware Accelerati… (read more)

Firefox v55.0.3 64bit is extremely slow in loading pages (so slow that I'm using IceDragon in most cases). I looked up increasing performance by using Hardware Acceleration by increasing the Content Process Limit (see attached). I have Hardware Acceleration selected. However, the selection for Content Process for my version of Firefox is set to one and the option is grayed out so I can't change it.

Any ideas on how to increase my performance? Running Win 10 Pro 64bit CU with latest updates.

Asked by rzn6jw 2 years ago

Answered by FredMcD 2 years ago

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On 2 different PC's Firefox now takes longer to load

In recent weeks on 2 different PC'a (both W10 64bit) - Firefox has become slow to start up. Previously click on start bar - seconds later FF would open followed by a dela… (read more)

In recent weeks on 2 different PC'a (both W10 64bit) - Firefox has become slow to start up.

Previously click on start bar - seconds later FF would open followed by a delay Google then open as home page.

Now click on start bar - nothing .... can be 10sec or more before anything starts ...... often you even think that maybe you missed the button ..... this is very noticeable recent change - has an update caused this ..... my builds are up to date.

Asked by sargan 2 years ago

Answered by cor-el 2 years ago

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Firefox very slow before update

For a number of times over many years I noticed that Firefox becomes very slow when not updated for a long time, and then becomes fast after update. I don't rush to upda… (read more)

For a number of times over many years I noticed that Firefox becomes very slow when not updated for a long time, and then becomes fast after update. I don't rush to update it so sometimes I am using a version for months. Any idea how could I fix this strange behaviour?

Asked by doru001 2 years ago

Last reply by doru001 2 years ago

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I am about to give up. Even refresh hasn't helped. Unusable for the last month or so. Forced to use Chrome.

Slow, slow, slow....often hangs up. Often can't keep up with typing...it used to be great. What happened? Is there any hope? Or do I just go completely Chrome? … (read more)

Slow, slow, slow....often hangs up. Often can't keep up with typing...it used to be great. What happened? Is there any hope? Or do I just go completely Chrome?

Asked by PollyZ 2 years ago

Last reply by FredMcD 2 years ago

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Firefox Quantum freezes for 5-15 seconds when opening a new tab or switching to it.

Not only I tried a fresh reinstall, I tried resetting all settings, safe-mode, rebooting, disabling hardware acceleration, upping the amount of processes FF uses, ALL the… (read more)

Not only I tried a fresh reinstall, I tried resetting all settings, safe-mode, rebooting, disabling hardware acceleration, upping the amount of processes FF uses, ALL the solutions the questions normally had... you name it.

This won't be solved by any of the other solutions I found here or anywhere else.

EVERY SINGLE TIME I open a new tab, FF Quantum (version 57, up to date as of today November 16th) freezes for 5 to 15 seconds. If I have a youtube video opened for example, the sound keeps playing (so the video is still playing on the "background") but I can't click anywhere or do anything, can't close the browser either if I don't open the task manager and shut down the process.

It's getting REALLY annoying, but I want to get a fix before I definitely decide to swap to Chrome. Please, don't make me switch to Chrome.

Asked by Heladitos 2 years ago

Last reply by FredMcD 2 years ago

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EACH TIME I TRY TO PLAY WEBKINZ THE BROWSER LOCKS UP AND I NEED TO REBOOT. HELP!

I CAN LOG ONTO THE WEBKINZ SITE WHICH TAKES ME TO MY PETS ROOM. IF I TRY TO GO TO PLAY WITH IN THE SITE = THE BROWSER LOCKS UP. WHAT CAN I DO TO STOP THIS FROM HAPPENIN… (read more)

I CAN LOG ONTO THE WEBKINZ SITE WHICH TAKES ME TO MY PETS ROOM. IF I TRY TO GO TO PLAY WITH IN THE SITE = THE BROWSER LOCKS UP. WHAT CAN I DO TO STOP THIS FROM HAPPENING. THANK YOU. BEV

Asked by bjencelesk 2 years ago

Last reply by FredMcD 2 years ago

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Which process should I end to kill Firefox 57.0?

Occasionally, any piece of complex software will stop responding, and need to be forcibly shut down. I had such an event today when the right-click (context) menus and t… (read more)

Occasionally, any piece of complex software will stop responding, and need to be forcibly shut down. I had such an event today when the right-click (context) menus and title-bar menus wouldn't appear. However, since upgrading to FF 57, I now see about 6 Firefox tasks and 6 firefox.exe processes in the Task Manager (Windows 10).

I like the feature of being able to restart Firefox (after killing it) and have my previous session restored, but the processes aren't really distinguishable in Task Manager, so I don't know which one to end/kill. I had to kill a few of them today before I stumbled upon the "main" process and Firefox disappeared. Can you help me to identify the main process for next time?

Asked by azinyk 2 years ago

Answered by azinyk 2 years ago

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New Quantum browser locks up and is unuseable

New Quantum browser upgrade loaded automatically yesterday and now is unusable as it locks up halfway through loading home page. Using Windows 7. I uninstalled Firefox … (read more)

New Quantum browser upgrade loaded automatically yesterday and now is unusable as it locks up halfway through loading home page. Using Windows 7. I uninstalled Firefox and reinstalled new download from Mozilla, still same - unable to use so now I am having to use Chrome browser. One thing I do note in task manager processes, it shows four different processes for firefox, and same for Chrome.

Asked by lateba 2 years ago

Last reply by bravedog 2 years ago

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When the YouTube sidebar is shown (on the left) it makes Firefox say "A webpage is slowing down your browser"

Ever since I upgraded to Firefox Quantum this has happened: Whenever i'm on a YouTube page where the sidebar (where you see Subcriptions, Saved/Your Playlists, etc.) it a… (read more)

Ever since I upgraded to Firefox Quantum this has happened: Whenever i'm on a YouTube page where the sidebar (where you see Subcriptions, Saved/Your Playlists, etc.) it always makes Firefox Quantum freeze and say "A webpage is slowing down your browser."

Clicking "Wait" does nothing and just makes the error pop up again after a few seconds. I have to click "Stop It" to make it fully load. This doesn't seem to happen on a video page as, for me, the sidebar isn't shown when I'm on a video page.

Is there any reason it is doing this? YouTube worked fine before I upgraded to Quantum, and now it seems like YouTube doesn't want to work with Quantum correctly?

I'm running Windows 7 Home Premium SP1 64-bit.

Asked by VeeTHis 2 years ago

Answered by FredMcD 2 years ago

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Why is my Personal Computer very slow to open browsers?

Firefox and my I.E. 11 Browsers are both very slow most of the time & getting slower. Firefox is very slow to open, hangs, won't respond for a few seconds, etc. I al… (read more)

Firefox and my I.E. 11 Browsers are both very slow most of the time & getting slower. Firefox is very slow to open, hangs, won't respond for a few seconds, etc. I also see a message at times, right above address bar that reads "Mozilla Firefox (not responding)". I have done a refresh of Firefox, started in safe mode, etc. with no increase in performance. I've also cleaned the S.S.D. (solid state drive) (disk cleanup). Please help!

Asked by hgw53t 2 years ago

Last reply by Pj 2 years ago

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since the last update does firefox stop functioning after 1 minute with everything I do

Since the last update Firefox doesn't work properly anymore, after one minute it stalls. I did fresh up, so all my adjustments are gone. But it still stalls. I have to fo… (read more)

Since the last update Firefox doesn't work properly anymore, after one minute it stalls. I did fresh up, so all my adjustments are gone. But it still stalls. I have to forceclose firefox. And can start it again. as soon as I play a youtube film it stalls again, or google agenda, I allowed pop-ups, so at least it got started, but after doeing 3 things in it firefox stalls. Can I put it back on the version before?

Asked by Sabine2 2 years ago

Answered by FredMcD 2 years ago