Join us to show up for other Firefox users 🦊. Earn fun badges and Mozilla swag vouchers! Find out more: https://mzl.la/askafox150

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

Hilfe durchsuchen

Vorsicht vor Support-Betrug: Wir fordern Sie niemals auf, eine Telefonnummer anzurufen, eine SMS an eine Telefonnummer zu senden oder persönliche Daten preiszugeben. Bitte melden Sie verdächtige Aktivitäten über die Funktion „Missbrauch melden“.

Weitere Informationen

Random Firefox process is using 25% of my CPU

  • 1 Antwort
  • 1 hat dieses Problem
  • 107 Aufrufe
  • Letzte Antwort von Happy112
  • Archiviert

Pretty much as the title says, going into task manager I see a Firefox process constantly using around ~25% of my CPU at all times as shown by the attached photo; The CPU is a quad-core 3.2Ghz i5 3330, Ending the task means that the process stops without causing any changes to Firefox, no tabs close or videos crash which only makes me wonder to what it's used for and why is it hogging my CPU.


Thanks in Advance, Deinsti

Pretty much as the title says, going into task manager I see a Firefox process constantly using around ~25% of my CPU at all times as shown by the attached photo; The CPU is a quad-core 3.2Ghz i5 3330, Ending the task means that the process stops without causing any changes to Firefox, no tabs close or videos crash which only makes me wonder to what it's used for and why is it hogging my CPU. Thanks in Advance, Deinsti
Angefügte Screenshots

Geändert am von Deinsti

Alle Antworten (1)

Hi Deinsti,

Would you please take a look at this article and see if maybe you'll find a plausible explanation there :

Firefox uses too many CPU resources - How to fix