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Initial performance is good, but over time especially when tabs are opened and closed frequently responsiveness to user input (e.g. tab switching, opening/closing tabs, response to hyperlinks) becomes very slow. After force quitting and restarting, performance is good again for some time. I exclusively use private tabs.

Firefox has been my entire family's browser of choice for as long as I can remember. Which one am I supposed to use now that Firefox won't quit shoving bloatware and diminished performance at me? I'm also seeing articles stating that they plan on making it even worse with more AI. I'm supposed to let them steal my data and turn my browser into sludge with absolutely no benefit to myself? And they're asking me to donate to them on top of it???

Does anyone know of a viable Firefox alternative that isn't a chrome dupe?

When I have multiple tabs open, around the 6th tab, the entire computer freezes. I have to press the physical button to shut down and restart. This behavior started with the last Firefox update. It doesn't happen when I use Brave browser. What changed to cause this?

I'm running Mozilla Firefox for Linux Mint mint 100 - 1.0 version 141.0.3 (64 bit) on Linux Mint 22.1 Cinnamon. These are the latest versions of Mint and of Firefox for Mint.

whenever i scroll trough a website in firefox, the ewperience is very laggy, feels like its 15fps. i have done basic things like disabling hardware acceleration, smooth smooth scrolling.

Please stop adding AI to your browser. It is making it slower and is a data privacy concern for me as well as many others. If you do not remove them I will be switching browsers. AI is not only bad for the environment, it does not even do the features you want it to do correctly. Please remove AI from firefox, i have been using this browser for years and would hate to leave because you refuse to remove AI features nobody asked for.

Why does Firefox's hardware usage, especially memory (RAM) and battery consumption, have to be so high that the laptop fan noise causes a lot of noise in the environment? Windows 11 25H2

Firefox freezes when I try to sign into YouTube via Google. Becomes totally unresponsive and I have to close browser. It's the only site this happens on. I have cleared the cache and cookies, unchecked "Hardware Acceleration" and other recommendations from other posts. Please talk to me like I'm your Baby Boomer dad.

Hi, I’ve noticed that Firefox often uses a lot of memory when I have multiple tabs open, even more than Chrome or Edge on the same number of tabs. Sometimes it slows down my system or makes switching between tabs laggy.

Is this normal behavior, or is there a way to reduce Firefox’s RAM usage without losing performance? Are there specific settings, add-ons, or troubleshooting steps I should try?

Thanks in advance!

Poor *Cache* management is the main issue for me for starting... The *fevicons(app icons)* got disappeared after clearing cache and fetching fevicons is also hit & miss... The tabs frequently reloads even after only few minutes of inactivity or after opening other app for something like opening WhatsApp for reading message, then it get reloaded and progress get lost in critical things like filling forms...

• Shortcuts* menu on Homepage is limited to 16 and unallocated icons got filled with history, why!

Toolbar should be more thin and URI bar should be more broad, *Reader Mode* icon should be shifted to main menu... Dark mode for websites should apply without reloading tabs... Download manager is still poor, the queued items sticks to the notification panel and can't be removed even after pausing, it is only removing by deleting it...

OS: Linux Recently, firefox has been annoying me with not closing a tab when I click the X like normal. I have to right click and close it, or press ctrl w. I am unable to move tabs around, as well. I am not sure since when this next bit has been happening, but I am also unable to interact with many elements of the top bar. The only thing of the firefox ui besides the websites themselves that let me interact with them at the moment is the home button, the new tab button, bookmarked sites, and that box icon on the left corner that lets you look at previously closed tabs. My Firefox's version should around, I believe it is 140.5.0 ESR. Thank you in advance. Update: Upon a restart of firefox, it appears to be working again as normal.. However, the bit with tabs not closing when the X is clicked and not being able to move tabs around has been happening multiple previous times, and it may come back. Update again: The issue does come back after some usage. I'm using KDE plasma with Wayland. I will try what the answer asked, and come back later. Update: This seems to happen very randomly and is not reproducible for me.. It will go a few days being fine, then randomly freeze again. Has not happened under another user, at least not yet.

What causes Firefox to freeze when two video windows are opened, i.e. in a new tab, the video windows immediately start to freeze? I use Windows 11. Other browsers work fine, only Firefox freezes with two windows open.

Every so often (about 5 times a day?) when I tap the screen, Firefox initiates a page refresh as if I've swiped down from the top of the page. The refresh icon appears fully pulled down, and if I catch it before I release my finger, I can swipe back up to cancel the refresh. It seems to happen on some sites more than others, but I can't find a pattern or reproduce it reliably (maybe it happens more on sites that don't scroll down so the page is always at the top?). I managed to catch a video of it happening, but I don't see a place to upload it.

This started happening a few days ago.

I tried to drag a tab out of the main window to put it in its own window on my other monitor, but the tab just became unselectable, and if i scrolled in the tab bar, the tab icon and text would remain locked in place in the display while the other tabs moved behind it.

The main Firefox window also lost the minimize, restore, and close buttons. The only way to make the tabs work was to close Firefox and relaunch it.

I noticed this happened only after any app in the OS went full screen, be it a steam game, or another Firefox window, or a VLC window, or anything else that I did that made an app full screen in any of my monitors.

I am using Ubuntu 24.04 with KDE Plasma 5.27.12. Kernel is 6.14.0-29. Display server is Wayland.

Initially I thought this could be a problem with the snap version of Firefox, so now I've installed the deb package, but the problem remains. Firefox is the only app which presents a problem of any kind when any window goes full screen.

Here's a video showing what the problem looks like, in case my description was not clear. The ghostly tab in this video is the chess.com home page and you can see it as the third tab from the top right of the video, and it remains in that position as i scroll the other tabs, completely unselectable with the mouse.

https://www.youtube.com/watch?v=-mAfPS3_qkg

Any idea of what could be causing this issue to appear?

Thank you!

Where is the issue tracker for Firefox Nightly on Android? The last few updates have caused the keyboard to block the bottom part of webpages, making it impossible for me to see what I'm typing.

​I am reporting two visual glitches (white bars) occurring in the Android version of Firefox.

1. White Bar Appear Numbered list items at the Top in Portrait Multi-Select Mode
   When the browser is in portrait mode and I enter the multi-select state (e.g., in the Bookmarks or Downloads management screens), a white bar appears briefly or persists at the top of the screen. This seems like a UI rendering error.
2. White Bar Appears on the Left Side in Landscape Mode
   When the phone is in landscape mode, a persistent white bar/strip is visible on the far left side of the screen. This affects the full-screen display.

Device Information: ​Android Version: Android 16 ​Firefox Version: 144.0.1 (Build #2016121407)

Moderator note: This question has been edited to correct the formatting.