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Firefox 53.02 suddenly became really slow.

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  • 7 have this problem
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  • Last reply by John99

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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/

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Now FF also uses about 20% of the processor.

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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/

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

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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.