Comments on: Fix: High CPU Usage with the Firefox browser on the Computer

By: Clueless

Clueless — Thu, 16 Feb 2023 03:30:29 +0000

I tried all of the steps outlined above, including “Refresh Firefox”. They may have mitigated the performance issue but Firefox is still a CPU hog, even when not accessing the web at all and without any tabs open (except for the default home page).

By: John

John — Fri, 25 Nov 2022 11:46:14 +0000

I was trying to diagnose issues with Windows and a laptop that had freezing issues. So I installed Ubuntu 22.04LTS. When running Firefox or Edge browser I experienced strange spikes with CPU. Although the spikes would affect one core at a time or move from a virtual core to a logical core. At first I thought maybe it was due to fractional scaling, so I went back to 100% scale. Still saw random 100% spikes with cores and fan would max out. Temps would go from 40c to 80c in an instant. I tried re-applying thermal paste which reduced idle temps from 40c to 35c so I knew it was effective. Mind you this is only a 10th gen. Core i3 10110u dual core CPU. After awhile I noticed the spikes also was causing the laptop to freeze up as well. Telling me, there was some serious heat issues.

By: Kushal Azza

Kushal Azza — Fri, 25 Nov 2022 10:04:51 +0000

In reply to John. Hi John, is your system running on the SSD or HDD? Generally, the mechanical HDD has a major effect on the system's performance, causing the over usage of CPU for minimal activity. SSD makes the overall system smooth and irons out all the CPU-related issues.

By: TiredFox

TiredFox — Wed, 04 May 2022 04:57:14 +0000

Firefox Version 90 – et al….It’s becoming a part time job, Firefox work-arounds….

In the interim, I did a simple .bat that I use every time I exit Firefox. It immediately kills the 9-12 hoggy processes that keep running long after you exit the browser. I’ve had no mal-effect from using this. The browser opens/operates rapidly and predictably afterward. Also this immediately frees up my resources so that I can…jee.. actually USE my computer after a session on Firefox.

To make your own:
1. Open Notepad & type or copy/paste from here:
taskkill /F /IM firefox.exe
2. Save it as the default .txt file with any name that is meaningful to you… “Parasite.txt” whatever… Locate this file you just saved, right click and select “rename.” Change the file extension (last three characters) from “.txt” to .bat.
– if you want to get swoopy, create an icon for this (right click) and put it on your desktop for handy access.

To use:
Every time you close Firefox, double click on either the .bat file you created or your swoopy icon. It assassinates all of the active and running Firefox.exe processes in a blink.