Firefox Community Forum

I've just opened one simple Web site (in addition to Mozilla), and already CPU usage sits at about 20%! Please refer to my recent posts here at "Why is Firefox Suddenly Taking Over my CPU?" for the problem description. I'm re-posting simply in hopes that I can "send data" on this one from outside my sandbox. Regards -- jclarkw

after working in firefox for a while and using a number of windows and the I close firefox with multiple windows open in my session. if i open it again and keep doing this for a while and then have closed firefox, eventually I can no longer open a firefox window and get a message the I have too many windows opn and can't open more till i close the open windows. i hover over the firefox app and all the previously closed windows are stacked up. why didn;t they close when i exited my firefox sessions. why are they still there and clogging up the system?

My Dell Precision Laptop from 2019 runs a frequently updated Ubuntu 24.04. About one or two weeks ago, after one of the latest Firefox updates, i noticed that video streaming produces rectangular flickering in rapid sweeps. ( Also fast scrolling large text websites produces similar flickering, I think I would have noticed it before...) . If you detected it once, you see it always again... :-( First I fiddled around with the nvidia settings because the driver was also recently updated, without much success. Playing locally stored videos, e.g. with VLC media player, still works fine, so the nvidia driver is not the problem i think. Yesterday I installed Chromium and the video performance is fine! As good as with firefox some weeks ago! So it must be one of the latest updates, that causes the problem. Generally I like firefox more than chromium. I like the control you have, e.g. via Add ons.. So I hope that the firefox performance will increase again... Thank you for firefox! Florian Mengedoht

Search bars are stuttering and videos audio is running twice at the same time, sometimes three times over top one another so garbled up you can't understand the audio. When I type in duckduckgo search or any web page search bar, it happened on Chewy, & Walmart, search bars also. Example: (Search: MetallicaMetallica JamesJames Hetfield ) Everytime I hit space bar it adds the same word again.

Hello

I have a 2021 IMAC desktop OS 13.7.8 In the last few days I have updated to Firefox 150.0 since then, my computer will not sleep if Firefox is open even if I select the Apple menu---sleep to manually make it sleep, it goes dark and comes back awake within 5-10 seconds. I CANNOT get it to sleep with Firefox open. If I close FIrefox, then I can get it to sleep. ANy windows that I keep open are windows I have had open for weeks and this did not affect the IMAC;s ability to sleep in the previous version of FIrefox. The only thing that has changed is FIrefox so I am telling you there is a problem...PLEASE fix it asap.

YES.....I have , as suggested in help sources.....done these..... 1)Settings > Privacy & Security > Autoplay and set it to "Block Audio and Video" 2)about:config in the address bar, search for media.video-wakelock, and set it to false

Arch Linux Wayland FF v150 from Arch repos

When right clicking the context menu appears, but sometimes in odd places, and the disappears, so you can't select anything.

Same is true selecting the Help submenu from the Hamburger menu.

Restarting the browser fixes it for a few minutes, then same problem comes back.

Other people also reporting the same thing - also Linux Wayland: https://www.reddit.com/r/firefox/comments/1suounc/comment/oi7jk9u/

Youtube playback causes Firefox to freeze up. Just the tab that is playing, not the entire browser. I have reinstalled firefox, used recommended settings and I have no addons or extensions. Other browsers work fine and there is nothing wrong with my computer. It is only firefox. This has been happening for about a month now.

When i start to use Firefox and browse internet, usage of ram memory slowly rise up to max, using 5-10 GB, i disabled AI, same problem, don't know if something with Youtube causing this, every open tab is consume too much of ram memory. I think it started yesterday or day before. Installed again Firefox, same problem, if i have more open tabs, quickly rise consumption or ram, i have 16GB. Now 4 tabs, FB and 3 Youtube, more than 5.6BG. In Task Manager shows Firefox (20), 20? only 4 tab open and ram rises.

Today Firefox has suddenly started using ~20% of my CPU capacity, causing my cooling fan to run high most of the time. Since I had been running Firefox v.149.latest, I tried updating to v.150.0, but that made no difference.

It's not Firefox by itself (only Task Manager open) but whenever I open another tab with almost any website (including this one) that CPU usage spikes. What gives?!

Details: Running under Windows 10 Pro (yes, I have installed the ESU package, good until thi8s fall) on a Lenovo P1 Gen 2. Currently running Firefox inside a Sandboxie Pro v1.17.4 sandbox.

Please Help! -- jclarkw

I'm experiencing an issue with the latest Firefox update. If I refresh a link/page the browser "spins out" in a rapid endless refresh cycle. In some cases, I receive an error message, "too many requests," and in other cases, the browser "locks up" and quits responding at all.

Is this a known issue?

Vince C.

FF can take 30-60 seconds to render ANY page after waking the computer from sleep. Windows 11 fully up to date. I've taken a profile during this time and you can see memory cycling up and down about every 5 seconds but I'm unclear what else I'm seeing there. I also see very little network traffic in the profile. I typically have 6-7 tabs open, and other programs on my computer, e.g. email, are not showing this lag.

https://share.firefox.dev/4tz810z

Kubuntu 24.04 with various Firefox iterations including 149.0.2. It happens on stand alone, snap and flatpak versions. I do not know what triggers this problem. As far as can tell it only occurs on Wayland and not on 'X'. .... After using Firefox normally for a while I first notice the problem when I can't click into the separate search box on the toolbar, then I find I can't drag the tabs around as per usual. Then, if I click on a toolbar icon it does not respond. In summary, the toolbar becomes inoperative. I do have 9 pinned tabs but I can often have many more standard tabs up before I ever notice the problem and, today, when it occurred I only had 3 additional tabs up. So, I can't tie the problem to the number of tabs.

I noticed in the past day that Firefox started using alot of ssd. It wasn't doing this before, I've been a Firefox user for years now. I'd like to stay that way rather than going with Google or Microsoft. I don't trust some of the other small companies with browsers. I like the fact that Firefox uses it's own engine too. In the last day it started using alot of disk for no reason. How do I fix this. Well, well, well. I just noticed that Icloud from Apple was using alot of disk too and when I shut it down in task manager it stopped. Firefox disk use is virtually none just like Microsoft Edge. So it's some kind of interaction with Icloud that is causing that. But it wasn't doing that before. I have task manager open most of the time to catch stuff like that. My system is decent I have a 2TB 990, 2TB 980, and a 2 TB 860, with and AMD 5800x, 32 GB of ram and an Nvidia rtx 470. Maybe some kind of backup with Icloud was happening, that isn't with Edge. So I know shutting that off works. Icloud is useful for backing up things from my phone though.

When I switch tabs from Google Maps to something else and back again, my browser often freezes and I have to restart Firefox. This also happens with websites that integrate Google Maps. I tried switching off several extensions, but the problem persists. It never happened to me on older Firefox versions. Is there any solution to this?

Even with just 1 tab open, Firefox is killing my laptop battery.

Win 11 PC laptop.

In background, it is using 40% to 50% of the laptop battery. I need much better performance from it. I have already turned off any settings I can find regarding Firefox's background functions. When I quit Firefox I want it completely off.

How can I do that?

I often keep many tabs open for research, and Firefox memory usage grows significantly over time. Are there practical settings or habits that help manage memory without sacrificing usability?