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Firefox reacts slower and becomes sluggish quickly

A few weeks ago I noticed that browsing in Firefox started being slower / sluggish. It usually happens in YouTube or Twitch, but can also happen while scrolling with the … (read more)

A few weeks ago I noticed that browsing in Firefox started being slower / sluggish.

It usually happens in YouTube or Twitch, but can also happen while scrolling with the mouse in wikipedia for example.

Some examples: -When having a Twitch stream open, the stream is running fine, but when clicking and moving the volume slider on the player, it does not move smoothly, and with some delay. -When doing a bit more heavy browsing, sometimes a tab might get "stuck", for example, the twitch stream might start to buffer for a few seconds. I notice the buffering is not related to any bandwidth related issue. -Firefox reacts slower (or with a small delay) while moving between tabs, clicking on links, etc. This usually happens only after a few hours after launching and browsing with Firefox.

Most happen after a while since I launch Firefox. And by a while I mean maybe 2-3 hours, and I don't have a ton of tabs open. It becomes slower much, much faster than it used to in the past.

Now, sometimes it can take Firefox up to 30 seconds to close completely, before I can launch it again.

I had the same Extensions installed before these issues started happening.

I tried uninstalling Firefox completely, then manually deleting the remaining profile folder, and do a fresh install of the latest Firefox version.

I checked the Windows Task Manager, and it shows (14) processes under Firefox. Is this normal? I tried unticking the "Use recommended performance settings" and restarting Firefox, but it still reached (14) processes after a couple of minutes.


I am not sure if it is related to Firefox itself. My computer is 5 years old but functioning properly...

I did not check if similar issues happen on a different browser. I am just so used to Firefox.

I had a few weird bug in Windows 10, but those existed for a good while now, and are not similar to the ones I experience while browsing with Firefox. I didn't notice anything similar while watching video files in a Media Player.

I am not sure if it can be hardware related. All seem to be working properly...


I want to figure out what is causing this. If you need any more information let me know.

Asked by sata Prieš 1 savaitę

Last reply by sata Prieš 6 dienas