topic Re: Firefox has gotten VERY slow to start lately in Discussions

Firefox has gotten VERY slow to start lately

LarsErikOsterud — Fri, 29 Aug 2025 11:56:06 GMT

Firefox used to start in a second on my Windows 10 PC.
But lately it now takes about 10-20 secunds to start (on 143 beta).
Is there any reason why it takes so much longer to start now?
Is there any setting og tweak I can do to get it to start faster?

Re: Firefox has gotten VERY slow to start lately

siffemcon — Sat, 30 Aug 2025 07:13:02 GMT

Try these.

Clear the browser cache:
- press Ctrl-Shift-Delete (Mac: Cmd-Shift-Delete)
- set 'Time range...' to 'Everything'
- untick all items except 'Cache'
- clear, then restart FF

Go to FF menu > Help > More troubleshooting information > click 'Clear startup cache' button on the right

Re: Firefox has gotten VERY slow to start lately

LarsErikOsterud — Wed, 03 Sep 2025 14:11:49 GMT

Didn't help. Also turned of all AI stuff. Didn't help either.
This is the 143 beta. Is there any reported issues with slow startup?
I use the non-beta on two other PCs and there it starts fast.

Re: Firefox has gotten VERY slow to start lately

Agentvirtuel — Wed, 03 Sep 2025 14:32:22 GMT

Hello

You can visit, advanced search.
https://bugzilla.mozilla.org/query.cgi?format=advanced

If you wish, file a bug report.
https://support.mozilla.org/en-US/kb/file-bug-report-or-feature-request-mozilla