Here are the steps to boot Firefox in Safe Mode with disabled add-ons: So if the browser performs along the expected lines in this mode, then the extensive resource consumption could well be attributed to any of these add-ons. When you boot the browser to Safe mode, it will disable all the third-party add-ons, themes, and extensions. If this doesn’t help, you can follow along with the advanced troubleshooter. These were the most basic fixes that often resolve the temporary CPU fluctuation. Once it boots up, launch the browser and see if the high CPU usage has been fixed or not. You may also manually download and install it onto your PC. Click on the Menu and select Download Firefox Update. If that is not the case, then consider updating it right away. Make sure to save all the opened tabs before doing so.
The first fix calls for quitting and then restarting Firefox.Before moving on to the slightly advanced fixes, let’s start off with some fundamental ones that are known to rectify the underlying issue more often than not.
