Skip to main content

All Questions

Tagged with
1 vote
1 answer
211 views

Tricks to emulating a Firefox fast-startup without using third parties?

(Windows 11) Firefox starts up significantly slow (when there aren't any windows already open) compared to Chrome and Edge, which seem almost instant. (I've tried without any add-ons/extensions, so ...
user1021's user avatar
5 votes
1 answer
575 views

Optimizing Firefox I/O regarding storage-sync-v2.sqlite-wal file (storage-sync-v2.sqlite database write ahead log file)

In my experience, Firefox creates a storage-sync-v2.sqlite database in each of its profile folders. This appears to happen even if profile syncing is disabled (and has never been enabled). What's odd ...
End Antisemitic Hate's user avatar
1 vote
1 answer
86 views

Bookmarklets executes slow in the background

I have a bookmarklet that jumps down (basically sends end repetitiously) to scroll down the feed on web sites that uses an "infinite feed" (e.g., Facebook, Quora). For obvious reasons, most ...
d-b's user avatar
  • 834
0 votes
1 answer
336 views

How do I put minimized windows to complete sleep (no CPU usage) on Windows 10?

The title says it all. Basically, I want to stop specific minimized programs in the background from running, for example, a high-CPU program minimized while I work on Firefox. How may I do this on ...
redbackspider's user avatar
0 votes
0 answers
2k views

Is it possible to have Firefox use more than 1 CPU core in Windows?

According to the Microsoft Windows Task Manager, Firefox tends to just use 1 CPU core for most of its processing. When a system isn't running any foreground tasks besides Firefox, this leaves much ...
End Antisemitic Hate's user avatar
4 votes
1 answer
2k views

Automate a periodical "Minimize Memory usage" on Firefox

During many years using Firefox and forks and I've realized that sometimes Firefox gets slow and sometimes unresponsive. Workaround, going to about:memory, and clicking on "Measure" button ...
Daniel Perez's user avatar
0 votes
0 answers
50 views

Google Chrome runs too slow vs. Mozilla Firefox

I have both Firefox and Chrome installed in a Windows 7 device. Firefox works very well and it doesn't hangs and it's also super fast. BTW in playing videos firefox in all of my devices is slow and ...
John D. J.'s user avatar
0 votes
1 answer
950 views

Why is Google Chromium so much faster than Mozilla Firefox in Google's Octane 2.0 benchmark?

It is crazy that my CPU is getting 45744 score in Octane 2.0 benchmark when it's is running on Google Chromium. On the contrary, the same Octane 2.0's score is 34406 when it's run on Mozilla Firefox. ...
falero80s's user avatar
  • 123
0 votes
1 answer
2k views

Firefox suddenly became very slow on my Ubuntu PC

I just finished backing up ~100GB to an external hard drive, during which my computer was very unresponsive even though my CPU and memory usage were very low and my operating system is installed on a ...
DutChen18's user avatar
  • 323
0 votes
1 answer
352 views

Sometimes tabs take long to open, with the firefox loading animation appearing for a long time

Sometimes tabs take long to open. I keep seeing the loading animation firefox has for the tab but it takes long to disappear. This can sometimes be for 3, 5, 10 or 30 minutes. Disabling or enabling ...
desbest's user avatar
  • 978
2 votes
1 answer
2k views

Firefox high virtual memory consumption

I am using Firefox 73.0 (64 bit) on Ubuntu. I was very happy with that until a few weeks. Today, Firefox is taking too much of the available memory and make my system almost unusable. I have browsed ...
gervais.b's user avatar
  • 121
1 vote
1 answer
318 views

Debian: How do I stop Firefox from lagging if on battery power?

I'm running Firefox ESR 68.4.1esr on a Debian 10 ("buster") x64 system. If it's relevant, the machine is a Thinkpad X1 Carbon 4th generation. When I'm on battery power, Firefox is extremely slow to ...
Michael A's user avatar
  • 777
0 votes
0 answers
1k views

What is taking my SSD to 100% utilize with the extremely slow read speed?

Recently, I found significant slowdown of my Firefox cold startup on my PC with SSD drive. Previously, my Firefox could cold start in less than 2 seconds. Now, it could take from 30 seconds to 1 ...
user1995781's user avatar
1 vote
1 answer
675 views

Recently versions of firefox/palemoon have been really slow to start

Both Firefox and Palemoon have been starting super slow on my i3 manjaro recently. Can take more then a minute before I see any screen. It runs fine after it has started up. I am at a loss to ...
nelaaro's user avatar
  • 13.8k
2 votes
0 answers
60 views

Measuring impact of gpu acceleration on rendering time of websites

How can I measure what, if any, speed up website loading times during webbrowsing with Firefox (or Chrome) an added dedicated graphic card (Nvidia GT 1030) provides over an old integrated one (Radeon ...
yuu's user avatar
  • 21
0 votes
0 answers
2k views

Very high memory usage on Windows 10 but programs don't add up

I generally get a memory usage >80% but when I check the Task Manager, none of the programs add up to that usage. The laptop (Dell XPS 13 9360) frequently has to resort to my SSD with a large number ...
incurious's user avatar
  • 123
1 vote
1 answer
1k views

What Firefox tabs take more CPU and RAM, and how to stop it?

When I open Firefox with many tabs, my Linux machine becomes slower, and in "top" I see a process named "Web Content" which takes a lot of RAM and CPU. I guess it is related to tabs running process in ...
Erel Segal-Halevi's user avatar
1 vote
0 answers
118 views

Is there anything like about:healthreport in desktop Firefox browser anymore?

Until recently, the desktop version of Firefox included a very useful internal page, about:healthreport. That page presented useful information, including graphs that showed browser startup time (y-...
End Antisemitic Hate's user avatar
2 votes
2 answers
2k views

Why is Firefox so slow when compared to Chrome when used for HTML5 gaming (“Forge of Empires”)?

I am on my laptop just contemplating on transitioning one Flash game I play (“Forge of Empires”) that is currently available in HTML5. I’m having a difficult time comprehending why the Firefox is so ...
Vlastimil Burián's user avatar
3 votes
1 answer
688 views

Firefox 63 slow page load?

My System: I have an I7-4790k cpu and a fast connection (low latency/ping 33 e.g. to amazon.de, enough traffic bandwidth 32 Mbps). I'm using Firefox 63 stable which uses all my cores. Problem: Still, ...
SearchSpace's user avatar
1 vote
0 answers
156 views

Firefox VERY unresponsive when browsing to repl.it

I'm using Firefox 58.0.2 (64-bit) and it's always pretty fast, but whenever I go to repl.it my browser becomes very unresponsive and everything. I tried using MS Edge and it worked just fine, the ...
kwyntes's user avatar
  • 161
5 votes
2 answers
5k views

Disable CSS animations on Firefox

I found CSS animations to be slow and most of the time useless. They make website feel heavy and laggy especially if I'm already using my CPU for other tasks. Therefore, I would like to disable CSS ...
gagarine's user avatar
  • 1,124
0 votes
0 answers
2k views

How can I speed up my pc for multi tab browsing?

What can I do to improve browsing performance? In particular I have a browser-session with around 1000 tabs (they only load when they're clicked). And I also open up many new tabs at the same time ...
mYnDstrEAm's user avatar
0 votes
0 answers
50 views

Does Firefox's Reader View save PC resources?

I have a series of articles from a media site that consume tons of resources. Complex templates, navigation, media inserts, bad JavaScript, yaddayaddayadda. This causes big load on both CPU and ...
DVK's user avatar
  • 690
1 vote
2 answers
76 views

Firefox frequently hanging, but no Javascript? Browser environment corrupted?

Recently my browser (Firefox latest version) has been hanging when visiting heavily commercialized sites even though I have Javascript and YouTube and other programmatic features disabled. How can a ...
Tyler Durden's user avatar
  • 6,171
0 votes
0 answers
214 views

How can I create a RAM disk and install Firefox into it?

I've a Fedora 22 64-bits system running under a notebook with Intel Core i3 processor and 7.7GB of RAM. I only use about 2~3GB of RAM (with everything I need) and I want to speed up my system, so I've ...
Fernando Paladini's user avatar
0 votes
1 answer
4k views

firefox 38.0.1 runs slow in virtualbox guest windows

I am making a new windows virtualbox image today, and just installed firefox from https://www.mozilla.org I have used firefox for years, and it has always being very fast and as responsive as my cell ...
tinlyx's user avatar
  • 1,530
3 votes
1 answer
1k views

Why is my mouse lagging over Thunderbird / Firefox window?

In Thunderbird 31.5.0 I noticed an annoying mouse delay/stutter when mousing over the email list or folder pane. At the same time I see a CPU spike of about 25% (older WinXP dual core system). Why ...
jacobsee's user avatar
  • 895
0 votes
1 answer
4k views

Why does my browser cache fill up so fast? [closed]

So on my second desktop there seems to be a problem with the browser cache. To clear up the cache i'm using this program called ccleaner. Helps me alot keeping everything clean. Recently the browser ...
Arwin's user avatar
  • 1
0 votes
1 answer
1k views

Firefox unbelievably laggy on dell laptop

I own a Dell XPS 15 (2014 model), running windows 8.1, where firefox has always been slow and sluggish. I haven't been able to solve the issue through google. One of the problems is that scrolling is ...
Ortix92's user avatar
  • 1,021
0 votes
0 answers
501 views

Sluggish Flash/HTML5 in Firefox 30.0

There are websites that have video playing back in the backround and removethebackground.com is one of those sites. This kind of effect slows browser's response almost to a crawl unless I switch to ...
Boris_yo's user avatar
  • 5,894
93 votes
2 answers
46k views

Is there a way to identify the busy (CPU-consuming) tab in Firefox? [duplicate]

Sometimes there's a nasty, guilty, CPU-hogging tab in Firefox that's maxing one of my CPU cores and making the whole browser sluggish. I'd like to find it and close it. Sometimes I get lucky, but ...
gojomo's user avatar
  • 1,116
2 votes
2 answers
1k views

Firefox bottleneck with lot's of tabs open?

I'm currently using Firefox 28.0 on a windows 7 system on a SSD. Sometimes, when I do some research, I open about 180+ tabs on my machine. This makes firefox super slow, without using the SSD or CPU ...
Ice's user avatar
  • 31
0 votes
1 answer
719 views

Why is Firefox Using 2 Gigabytes of RAM?

I have version 26.0. Firefox uses 2 gigabytes of RAM minimum with only one tab open. I've tried uninstalling add-ons, disabling plug-ins, everything, but nothing helps. What do I do?
kookman98's user avatar
  • 121
0 votes
0 answers
76 views

hundred-tab friendly Mozilla w/ no continuous javascript

I often have hundreds of tabs open in many windows in Mozilla, and, after a while, it starts consuming significant amount of CPU for these dormant pages, and each new window and page takes a very long ...
cnst's user avatar
  • 2,475
4 votes
3 answers
6k views

Firefox: slow visual performance and high CPU usage

My Firefox(24.0) is currently suffering quite badly in terms of performance, no smooth flow scrolling(smooth scroll enabled), even the page loading favicon is not smooth, CPU usage is high and video ...
Bleeding Fingers's user avatar
2 votes
4 answers
2k views

Firefox changing tabs is slow

How can I diagnose the problem behind the delay I get when changing tabs in Firefox? It is up to about 1.5 seconds. To provide some background, I use three monitors and often have three Firefox ...
danijar's user avatar
  • 399
0 votes
1 answer
43 views

Firebug - turn of (deactivate) panels that are not used

I have all firebux panels on right now. There is one javascript application that horibly laggs when all panels are active. So how do I turn panel (HTML, DOM, CSS, Net) off when I don't need one, but I ...
Tomáš Zato's user avatar
  • 4,524
3 votes
0 answers
1k views

When tab groups are loaded, Firefox becomes unresponsible for minutes (Unresponsive script)

I have several tab groups (~ 20) in Firefox. I can start the browser without any problems. However, as soon as I … click at the "Group tabs" icon in the toolbar, or right-click on a tab and hover ...
unor's user avatar
  • 3,136
3 votes
2 answers
1k views

Firefox 16.0.2 slows everything down in Windows 8

Firefox 16.0.2 (the latest version) was working ok when I installed it, but today the whole system slowed down and only worked intermittently and screens kept losing focus before I could type in ...
user169354's user avatar
2 votes
1 answer
707 views

Low YouTube framerate while loading Windows 8 Firefox

I am getting terrible frame rates while trying to stream videos on YouTube, particularly HD and/or fullscreen ones, while using Firefox on Win8. However, once the video is fully buffered there does ...
WeymannD's user avatar
3 votes
6 answers
4k views

Addons which actually make Firefox run faster? [closed]

I would like to know of addons which actually enhance firefox's performance, both intentionally and unintentionally. I find that firefox tends to have major performance issues with certain websites. ...
Zombies's user avatar
  • 3,902
0 votes
3 answers
1k views

Lightweight ad-blocker for firefox [closed]

On a old machine (512 MB RAM) I am currently running ubuntu jaunty and firefox 3.0.15. I tried the ad blocker addon add block plus but it eats lots of RAM (>300 MB). Is high memory load of this add-...
student's user avatar
  • 475
4 votes
1 answer
595 views

Firefox not using cache?

Some times I have issues with the wireless connection where I live. That issue is irrelevant to this (there are two IT departments managing this thing; there's nothing I can do about it). Most of ...
zebediah49's user avatar
1 vote
2 answers
3k views

Faster two way Boomark/History Sync for Firefox?

I need a fast automatic two-way bookmark & history sync. Firefox sync seems too slow because I might bookmark/visit a URL then within a few mins put desktop to sleep and leave the house; if it ...
g0h's user avatar
  • 351
0 votes
1 answer
76 views

Firefox performance of web pages

I know a thing called firebugs exists but I am looking for any other firefox plugin that gives useful performance information. What I would really like is something that would record my clicks and ...
dublintech's user avatar
0 votes
1 answer
375 views

Iceweasel 8.0 extremely sluggish in Debian Squeeze

My installation of Iceweasel is extremely sluggish in Debian Squeeze. CPU usage by /usr/bin/Xorg seems to spike when doing very simple things like switching empty tabs, opening new tabs, scrolling. ...
Matt Alexander's user avatar
3 votes
1 answer
3k views

Why is the firefox so slow over `ssh -XC`?

If I compare Firefox to other browsers like Chrome or Epiphany, Firefox takes ages to load and behaves very slow. Why? I would like to use Firefox instead of others, in order to use my environment, e....
math's user avatar
  • 2,653
2 votes
1 answer
1k views

Does a full cache slow down firefox page loading speed?

On the road i had to use a slow (64kB/s) internet connection with firefox 6. Max. cache size is 250 MB. While i never had problems with full cache on DSL connections and page loading speed, on very ...
Hauser's user avatar
  • 223
0 votes
1 answer
52 views

How can I get my Firefox Addons page to display again?

My Firefox has lately been significantly slower than usual. I wanted to see if I could delete an add-on that might be causing the problem but when I click on add-ons, it never shows me the add-on ...
Edward Tanguay's user avatar

15 30 50 per page