Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Caută ajutor

Atenție la excrocheriile de asistență. Noi nu îți vom cere niciodată să suni sau să trimiți vreun SMS la vreun număr de telefon sau să dai informații personale. Te rugăm să raportezi activitățile suspecte folosind opțiunea „Raportează un abuz”.

Află mai multe

Firul de discuție a fost arhivat. Adresează o întrebare nouă dacă ai nevoie de ajutor.

Firefox consumes CPU when displaying static pages

  • 2 răspunsuri
  • 1 are această problemă
  • 108 vizualizări
  • Ultimul răspuns dat de gschaeff

gschaeff
gschaeff

In the Windows Task manager I see that the Firefox.exe process consumes constantly 7 to 18 % of CPU even if I display a static page. E.g. Now when entering t6his message on the Firefox Help page, I have only 1 Firefox window and Tab open. The Firefox.exe process consumes 14 to 18 % of CPU. I have noticed this since several months on several computers. Why does Firefox consume constantly a significant part of CPU ? Could it be due to some malware ?

Regards Guy Schaeffer

In the Windows Task manager I see that the Firefox.exe process consumes constantly 7 to 18 % of CPU even if I display a static page. E.g. Now when entering t6his message on the Firefox Help page, I have only 1 Firefox window and Tab open. The Firefox.exe process consumes 14 to 18 % of CPU. I have noticed this since several months on several computers. Why does Firefox consume constantly a significant part of CPU ? Could it be due to some malware ? Regards Guy Schaeffer

Toate răspunsurile (2)

cor-el
cor-el

See https://support.mozilla.org/kb/Firefox+consumes+a+lot+of+CPU+resources

Start Firefox in Use Troubleshoot Mode in Firefox to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

gschaeff
gschaeff Deținătorul întrebării

I have chosen Firefox Default Theme. I have started Firefox in Safe mode. I have disabeled all Plugins. The process firefox.exe still consumes much CPU (13% to 18%) while I am typing this message on the Firefox Help page (with only this window with this Tab open).

I have added some screenshots - Extensions - Plugins - Task manager - Default theme

Regards Guy Schaeffer