The cpu usage would be like 150% at that point, and whatever video you were attempting to watch, or was playing as long died. The problem is even if I set it very very high, the performance is so degraded, that firefox is pretty much unusable. So you can set the time frame of how long firefox takes to notice and warn you that a script is spiraling out of control. As shown below:īasically once I kill firefox (the x-I tracked the 'unresponsive script issue where it can be configured in the about:config > dom.max_script_run_time The cpu has been suffocated usually way above 100%, and there's usually a nice warm friendly message saying that a script in firefox has gone unresponsive and gives me the option to kill it, let it continue or debug it. These problems are often resolved with new Windows updates but that is not always the case.

Various graphics issues often affect the performance of the Mozilla Firefox browser. Lest this be due to malware, I confirmed the results on another Windows 7 machine and a. Solution 3: Reinstall Your Graphics Card Drivers. Firefox 46, like Opera, constantly consumed about 12 of the CPU to display the page after it had loaded. But if the computer goes into suspend/sleep and I wake it up and log back in. Check to see if the high CPU usage problem by Firefox is resolved after restarting your browser. What happens is, if I open up any flash media (youtube I've noticed this on), the cpu usage spikes up as per normal.

Since the upgrade though I've noticed that it's been choking my cpu usage like Charles Manson at a county faire So I only sort of recently upgraded to finally using the newly accepted Firefox branded web browser.

Firefox takes up too much cpu