HI, try disabling the Reddit Enhancement Suite Extension you have installed.

SAFE MODE

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

In Firefox Safe mode these changes are effective:

• all extensions are disabled (about:addons)
• default theme is used (no persona)
• userChrome.css and userContent.css are ignored (chrome folder)
• default toolbar layout is used (file: localstore-safe.rdf)
• Javascript JIT compilers are disabled (prefs: javascript.options.*jit)
• hardware acceleration is disabled (Options > Advanced > General)
• plugins are not affected
• preferences are not affected

TEST''''is issue still there ?

Pkshadow said

HI, try disabling the Reddit Enhancement Suite Extension you have installed.

Hey.

I thought this solved my problem, but no. Apparently FF freezes only on sub reddits with animated gifs...

Hi, This was a Bug 2 yrs ago but fixed. Please see solution here : https://support.mozilla.org/en-US/questions/1178597 and make sure please you go through it all.

Pkshadow said

Hi, This was a Bug 2 yrs ago but fixed. Please see solution here : https://support.mozilla.org/en-US/questions/1178597 and make sure please you go through it all.

This will not freeze FF.

I think I know how to reproduce this for me. Go to a sub reddit with gifs, for example https://www.reddit.com/r/gifs/.

Now you have to choose the display format (see picture). When browsing like this, FF freezes after a few seconds.