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CPU usage and Fan noise

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  • 1 has this problem
  • 8 views
  • Last reply by Terry

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Firefox is causing loud fan noise and very high CPU usage. It is to the point I am going to have to stop using it.

Here is my info: iMac 27" 3.5 GHz Quad-Core Intel Core i7 16 GB MacOS Catalina 10.15.7

Increased usage happens when there are 3 or more tabs are open or any sort of streaming on one tab. It goes up and down, but reaches up into the 90% area.

There must be a fix for this. No other browsers have this issue.

Firefox is causing loud fan noise and very high CPU usage. It is to the point I am going to have to stop using it. Here is my info: iMac 27" 3.5 GHz Quad-Core Intel Core i7 16 GB MacOS Catalina 10.15.7 Increased usage happens when there are 3 or more tabs are open or any sort of streaming on one tab. It goes up and down, but reaches up into the 90% area. There must be a fix for this. No other browsers have this issue.

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