Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox 53.02 suddenly became really slow.

  • 4 replies
  • 7 have this problem
  • 5 views
  • Last reply by John99

more options

Windows 10. FF suddenly became very slow, almost unresponsive. Starting in safe mode fixes this problem, but there aren't any extensions installed and I have refreshed FF and turned off hardware accel.

Windows 10. FF suddenly became very slow, almost unresponsive. Starting in safe mode fixes this problem, but there aren't any extensions installed and I have refreshed FF and turned off hardware accel.

Chosen solution

hi, we are currently aware of a bitdefender signature update that's cuasing some havoc for firefox users - are you using bitdefender security products on your system by chance? https://www.reddit.com/r/firefox/comments/69zsnj/help_super_laggy_firefox_browser_08052017/dhbles0/

Read this answer in context 👍 1

All Replies (4)

more options

Now FF also uses about 20% of the processor.

more options

Chosen Solution

hi, we are currently aware of a bitdefender signature update that's cuasing some havoc for firefox users - are you using bitdefender security products on your system by chance? https://www.reddit.com/r/firefox/comments/69zsnj/help_super_laggy_firefox_browser_08052017/dhbles0/

more options

Yep, that's probably it. I use BitDefender. Why is it that I always magically choose the software combinations that cause havoc?

more options

Bitdefender rolled back there free versions update yesterday and initial reports seem to confirm the issue is now resolved & bitdefender can be used as normal again.