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Firefox still hangs/freezes after refresh firefox and disabling hardward acceleration

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  • آخر ردّ كتبه andrefortier

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Firefox for Mac regularly freezes 10-30 seconds when visiting a variety of websies (Flickr, Tumblr,...). I did a Firefox refresh, disabled hardware acceleration, deleted all add-ons and continue to have the issue. If I visit the same websites using Safari or Chrome, I do not have the issue with hanging/freezing at all so the issue is with Firefox only. This issue has been going on for quite a while with various versions of Firefox. I had the same issue on a previous MacPro, I upgraded my MacPro in Jan 2015 and the issue continues after doing a reinstall of all software on my MacPro from scratch. Any suggestions to fix this issue would be appreciated.

Firefox for Mac regularly freezes 10-30 seconds when visiting a variety of websies (Flickr, Tumblr,...). I did a Firefox refresh, disabled hardware acceleration, deleted all add-ons and continue to have the issue. If I visit the same websites using Safari or Chrome, I do not have the issue with hanging/freezing at all so the issue is with Firefox only. This issue has been going on for quite a while with various versions of Firefox. I had the same issue on a previous MacPro, I upgraded my MacPro in Jan 2015 and the issue continues after doing a reinstall of all software on my MacPro from scratch. Any suggestions to fix this issue would be appreciated.

All Replies (5)

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Many site issues can be caused by corrupt cookies or cache.

  • Clear the Cache and
  • Remove Cookies
    Warning ! ! This will log you out of sites you're logged in to.

Type about:preferences<Enter> in the address bar.

  • Cookies; Select Privacy. Under History, select Firefox will Use Custom Settings. Press the button on the right side called Show Cookies. Use the search bar to look for the site. Note; There may be more than one entry. Remove All of them.
  • Cache; Select Advanced > Network. Across from Cached Web Content, Press Clear Now.

If there is still a problem, Start Firefox in Safe Mode {web link} While you are in safe mode;

Type about:preferences#advanced<Enter> in the address bar.

Under Advanced, Select General. Look for and turn off Use Hardware Acceleration.

Poke around safe web sites. Are there any problems?

Then restart.


Remove History For One Site Open the History Manager <Control><Shift> H. In the search bar, enter the name of the site. Right click on one of the listings and select Forget About This Site. This should remove all information, including any passwords / settings.

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I followed the above and continue to have Firefox regularly freezing for 20-30 seconds on various sites

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As a test, disable your protection programs.


I've called the big guys to help you. Good luck.

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I don't use any protection programs so there's nothing to disable.

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In addition to this, I enabled the Sync function. After doing so, anytime I add any bookmark, there is a delay of about 20 seconds. The bookmark gets added, sometimes right away, however, if I click on any other bookmarks, it's as if I hadn't clicked on anything and eventually the link that I clicked on gets displayed in the browser. If I disable the Sync then I don't have the delay when adding bookmarks at all. Any suggestions to improve this would be appreciated.