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Firefox 88 and 89 too slow

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  • Last reply by FredMcD

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Starting from Firefox 88, and still in Firefox 89, the browser became exceedingly slow. Typing one line of text has a 4-5 seconds delay, and loading pages is even slower. I tried a new start, new user, refresh, etc., without success. Firefox 87 works fine on the same computer but 88 and 89 are annoyingly slow.

I run Firefox on Linux 4.19.0-16-amd64 with Debian 10, windowmanager Xfwm4, displaymanager lightdm

Any help?

M. Natiello

Starting from Firefox 88, and still in Firefox 89, the browser became exceedingly slow. Typing one line of text has a 4-5 seconds delay, and loading pages is even slower. I tried a new start, new user, refresh, etc., without success. Firefox 87 works fine on the same computer but 88 and 89 are annoyingly slow. I run Firefox on Linux 4.19.0-16-amd64 with Debian 10, windowmanager Xfwm4, displaymanager lightdm Any help? M. Natiello

Chosen solution

Start Firefox using Troubleshoot(Safe) Mode {web link}

A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?


https://support.mozilla.org/kb/Firefox+is+already+running+but+is+not+responding

https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster

https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix

https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-ram

https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding

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Chosen Solution

Start Firefox using Troubleshoot(Safe) Mode {web link}

A small dialog should appear. Click Start In Troubleshoot(Safe) Mode (not Refresh). Is the problem still there?


https://support.mozilla.org/kb/Firefox+is+already+running+but+is+not+responding

https://support.mozilla.org/en-US/kb/firefox-slow-how-make-it-faster

https://support.mozilla.org/en-US/kb/firefox-uses-too-many-cpu-resources-how-fix

https://support.mozilla.org/en-US/kb/firefox-uses-too-much-memory-ram

https://support.mozilla.org/en-US/kb/firefox-hangs-or-not-responding