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Multiple instances of Firefox appear on task manager when only one screen is up

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  • Last reply by zeroknight

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Recently Firefox is slower and when I have one screen up and go to task manager it shows anywhere from 8 to 40 instances of Firefox running and sometimes 98% CPU usage. I have had other problems since the Microsoft January 9, 2024 update. Is this related or is this a separate Firefox issue? How to start fixing?

thanks

Ron

Recently Firefox is slower and when I have one screen up and go to task manager it shows anywhere from 8 to 40 instances of Firefox running and sometimes 98% CPU usage. I have had other problems since the Microsoft January 9, 2024 update. Is this related or is this a separate Firefox issue? How to start fixing? thanks Ron
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FISSION: The links are sites explaining the Firefox's Project Fission. This is the reason for the processes you see in task manager. You can turn fission off by setting it to false on the about:config page. see screenshot Here is more info. https://www.ghacks.net/2016/02/15/change-how-many-processes-multi-process-firefox-uses/

Introducing Firefox’s new Site Isolation Security Architecture https://hacks.mozilla.org/2021/05/introducing-firefox-new-site-isolation-security-architecture/

Firefox's Project Fission: better security and more processes https://www.ghacks.net/2019/02/07/firefoxs-project-fission-better-security-and-more-processes/

Modified by jonzn4SUSE

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You can get more details by visiting about:processes in the address bar (Shift+Esc).

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