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Firefox Slow on Only One PC

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  • Last reply by zeroknight

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I love Firefox and am a committed user, but on only one of my PCs it runs so slow that I am considering switching browsers. The slowness happens most of the time, but not all of the time, except when I open more than one tab, when it is all of the time. (Neither Chrome nor Edge have any such problems.) The loading time for pages is agonizing, and I have tried the following:

  • Clearing Firefox's cache (which usually fixes the problem for a day or so)
  • Resetting Firefox (which usually fixes the problem for a day or two)
  • Using all combinations of Performance settings (using/not using recommended settings and using/not using hardware acceleration

I am running the same Kaspersky software on this PC as the ones on which Firefox runs well, so I don't think that is the problem (although I'm not an expert tech user, I admit). I'm running an AMD Ryzen 5 2600X with 2x8 GB DDR4-3000 RAM. Please advise.

I love Firefox and am a committed user, but on only one of my PCs it runs so slow that I am considering switching browsers. The slowness happens most of the time, but not all of the time, except when I open more than one tab, when it is all of the time. (Neither Chrome nor Edge have any such problems.) The loading time for pages is agonizing, and I have tried the following: * Clearing Firefox's cache (which usually fixes the problem for a day or so) * Resetting Firefox (which usually fixes the problem for a day or two) * Using all combinations of Performance settings (using/not using recommended settings and using/not using hardware acceleration I am running the same Kaspersky software on this PC as the ones on which Firefox runs well, so I don't think that is the problem (although I'm not an expert tech user, I admit). I'm running an AMD Ryzen 5 2600X with 2x8 GB DDR4-3000 RAM. Please advise.

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Kaspersky can cause performance issues if you have "Inject script into web traffic to interact with web pages" enabled and don't have the companion browser extension installed.