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Firefox isn't having a memory leak (RAM and CPU usage stays the same) nor is it maxing my GPU or anything like that. But if I watch enough of a 1080p60fps stream or enough 1080p60fps content in general (this stream is a notable offender: https://www.youtube.com/watch?v=W6OOnrx8g58), it'll start to slow down over time (generally a couple of hours) and [really chug and drop frames like its nobody's business: https://i.imgur.com/OmHqJ8a.png. This does not occur in Edge (the streams run silky smooth even after 2+ straight hours of watching), nor does it happen on other streaming sites like Twitch. It also doesn't happen in Firefox on my desktop.

Regular 1080p60fps videos are MOSTLY unaffected. The buffer wheel animation in most videos is choppy and moving back/forth with the 5-sec rewind/ff feature results in a short, choppy buffer wheel on a lot of videos(https://imgur.com/tm1AtkB), even if the video itself is mostly unaffected. Some more "intense" videos will make the fan speed go up. HD videos are *slightly* less smooth when in this state. Unpausing a video often results in a short buffer wheel before the video resumes if left paused for at least a minute or so. I also get a tiny TINY bit of frameskip on the occasional Twitter video while in this "state".

Its like the memory is "caching" something and killing the process clears that "cache", yet I have no idea what is actually doing this.

Refreshing the page/closing and reopening the stream stream has no effect, its like an affliction and will still be choppy when you reload. Restarting the Firefox session or killing the process the stream or a video is running through fixes it for awhile (even if the stream stilll drops more frames overall than it would in Edge), but it feels like I have an "allowance" of 1080p60fps content before these streams start to chug. Nothing else in-browser is lagging at all.

Hello! I updated FLOORP on the 5th May, FLOORP crashed and then Brave, Firefox, Waterfox, LibreWolf and Vivaldi started crashing. I had Brave and Vivaldi open when I launched FLOORP and FLOORP asked consent to update itself and after updating, it did not open in “previous session” and I could not open “previous session” through History. When I launched “Settings” from menu, “previous session” opened! I had pinned “Settings” earlier.

Now the bizarre happens; suddenly LibreWolf launches by itself also without “previous session” and open tabs in Brave and Vivaldi disappear to single New Tab. After some tinkering, I was able to restore “previous session” in LibreWolf, Brave and Vivaldi.

Now I close all browsers and open Firefox, no “previous session” and some random windows in its history, opening these random windows also opened “previous session”! 🙄But then Waterfox launches also without “previous session”, here clicking on OneTab extension recovered “previous session”.

Cutting short; I uninstalled, Waterfox, LibreWolf and FLOORP, this did not help, I ran System Restore twice to two different points and it has not resolved the issue.

Thankful for any help!

Reaching my end with defects in thunderbird. I select items in the inbox/index of the UI and it isn't updating the email view pane.

Sometimes I select in the index, it highlights the message, doesn't update and then 10-15 seconds later, the UI does a big update like it had hung on something, and it just ignores my selection completely and selects whatever it wants. This is crazy.

I'll add I have a "unified folder" and despite the 3 accounts inboxes included from accounts configured to never auto update, IT ALWAYS does updates whenever it wishes. Again, this is crazy. Like it can't be supposed to work like this ?

So: Is this thing single threaded ? Is the "unified" folder functionality mature and does it work properly ? Suggestions or pointers to fix or research/test what I see is just flat out poor performance when clicking stuff in the UI ?

I really can't believe I'm questioning the basics of thunderbird.

Version is Win 10, 115.8.1 (64-bit), udpating now but I'd say I have found the basic performance to have tanked since the bug UI change to "modernize" it. Seems to me, without exact data to support that I have been degrading ever since. No updates I've made in last few months have improved anything.

Really don't want to leave but I'm about to try using it on Mac and Linux to compare and at same time I just configured all this in apple mail for the first time in maybe 10 years. This is something I never ever thought I'd do.

Last thought, I use same accounts, on iPhone (Boxer) and many iPads. I don't see any performance problems there so I'm pretty confident this isn't the mail servers.

Hello, I have the fallowing issue with Firefox and the sound icon on taskbar in Windows 10 22h2, when Firefox is open and I click on the sound icon on the taskbar in Windows 10 22h2 the sound icon does not open, when Firefox is closed the issue is gone.

Any help to fix this issue would be great.

Thanks

Matthew

Hi,

I recently facing an issue that the Firefox browser randomly maxed out my RAM and went unresponsive. Like the screenshot below, I am only trying to open Facebook and Instagram, 2 tabs.

I have tried to open about:memory and about:processes to monitor but it just went unresponsive and both the monitoring just hanged.

Have no idea why the Firefox process taking up so much RAM. Need help.

When I watch a video not in the full screen mod, the colors are as dark as they're supposed to be (pic 1), but when I enter the full screen mod, the video gets pale/brigher (pic2, compare the dark zones). it's fully connected with hardware acceleration. When it's on videos get pale and when it's off they don't. But I can't turn it off because I also need it for an addon I use as it won't work without it. Someone on the forum here said that turning on layers.force-active might help with a bug of hardware acceleration. I turned it on and it helped - acceleration was on and videos didn't get pale, but then everything got back and now this setting doesn't work anymore. I also opened trouble shooting mode and videos didn't get pale with it even with acceleration on, but I don't know why, becaues when I closed it I deleted all the extensions, turned on acceleration and videos got pale again. And, this problem is only in this browser. This problem really keeps my up at night and I'm so tired of it

bold textExperienced Firefox browser session freezes a month or two ago. It seemed that some March/April '24 fixes/patches stabilized the app. They are occurring again with increased frequency. What should I do to avoid this problem or switching to another browser? Thx

hello when i write many cell code in google colab and then run all of them when output there and i want to scroll up from last cell code to go to top of page,i have lagging for scroll up in that and this problem just in firefox and in chrome is'nt problem thanks

My sent messages are not being saved-error message says current command did not succeed. The mail server for plvltodd@cox.net responded TRYCREATE mailbox doesn't exist Sent .001 + .000secs

I've followed all the recommendations. Problem still happens in troubleshooting mode as well. Doesn't allow sign in either. Have reloaded all C++, uninstalled, reinstalled, restarted. No links or pages will open.

Well, since I changed to a new computer with Win 11, videos on Facebook don't play right. They are videos that are posted by various people and real entities. They are not smooth. They start to play and immediately pause then jump forward then pause and jump forward. If I copy the link and go to Chrome, paste the link and play the videos, they are normal Never did that on my old computer. Any ideas why the videos don't play normal?

Very similar to -> https://support.mozilla.org/en-US/questions/1427103

My firefox now freezes when I click in the URL bar. NO solution I have found so far other than task manager -> end task and restart the browser. Occasionally that will work, other times it will immediately freeze again.

Historically I have had a LOT of tabs open, more recently less than 20 tabs. I have never seen the issue before.

Windows 10 22H2 Ryzen 3600 32GB RAM Nvidia RTX 3060 LHR 3 Monitors 2 - 1920x1200, 1 - 1920x1080

What I have tried so far: - reboot - restart firefox - "refresh" firefox - troubleshooting mode - removed all extensions - removed some extensions - reduced tabs down to a few - tried to click in the start page search instead of url bar - turned off hardware acceleration - turned on hardware acceleration - turned off TLS DNS - using only 1 window at a time instead of 2 or 3 - waited for an hour or so and window did not become responsive

None of these solutions fixed the issue. A screenshot would be useless as the window looks fine, but the UI is unresponsive.

I've been trying to connect to discord for a while, left it on for 2 hours and hasnt loaded. when i opened the console log, all it said was "Firefox can’t establish a connection to the server at wss://gateway.discord.gg/?encoding=json&v=9&compress=zlib-stream" all over. Please help.

I have a 2019 Macbook Pro 16" and whenever I share a FireFox window on facetime, I'm unable to stop sharing it until I end the Facetime call. Even then, the sharing screen notification still appears in the top right in the menu bar and I'm unable to share my screen for future Facetime calls unless I restart my laptop (thus removing the problem). Is this a known issue, and is there a way to fix it other than restarting my laptop?

Video of issue Video of issue