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Firefox is very slow and laggy for most websites I visit, cannot figure out how to fix.

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New User

Firefox is very slow and laggy for most websites I visit, cannot figure out how to fix.

This started just about a month or so ago. Almost every website I visit Firefox either lags or outright stalls, giving me the (unresponsive) notice at the top or unresponsive script error messages.

I have tried every suggestion I could find in the help, including "Firefox uses too much resources", "Firefox hangs or is unresponsive", and "Unresponsive script - how to fix". I have cleared all history, cookies and cache, reset Firefox, reinstalled, everything I can. I disabled all my extensions and add-ons one by one to see if they impacted, I made sure everything including Firefox is up to date. Nothing has changed the behavior.

Any help here would be appreciated.

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Accepted Solutions
Grand Master

Re: Firefox is very slow and laggy for most websites I visit, cannot figure out how to fix.

4 REPLIES
Grand Master

Re: Firefox is very slow and laggy for most websites I visit, cannot figure out how to fix.

Site Moderator

Re: Firefox is very slow and laggy for most websites I visit, cannot figure out how to fix.

It is possible that your security software (firewall, anti-virus) blocks or restricts Firefox or the plugin-container process without informing you, possibly after detecting changes (update) to the Firefox program.

Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.

See:

New User

Re: Firefox is very slow and laggy for most websites I visit, cannot figure out how to fix.

That solved it. I created a new profile and that seems to fix the problem. Everything loads quickly again, no lag.

I guess I will transfer over my bookmarks to the new profile and delete the old one. Thank you for your help.

New User

Re: Firefox is very slow and laggy for most websites I visit, cannot figure out how to fix.

This new Firefox upgrade is the worst in the companies history. It is so incredibly slow; when I head into a site and simultaneously do the same thing on Chrome, Firefox just sits there and does nothing, while Chrome loads up immediately.

I never thought I would say this but, if these issues to not get fixed soon then I'll stop using Firefox and use Chrome exclusively. Also, where the heck is the logo, I miss it. Stop trying to copy Chrome, it's not worth it.