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

Avatar for Username

Претражи подршку

Избегните преваре подршке. Никада од вас нећемо тражити да зовете или шаљете поруке на број или да делите личне податке. Пријавите сумњиве радње преко „Пријавите злоупотребу” опције.

Сазнај више
Ова тема је архивирана. Питајте друго питање ако вам је потребна помоћ.
Solved Архивирано

firefox.exe* uses large amount of cpu 40-50%

Firefox Отклањање грешака
cor-el replied пре 11 година
tomcat867
tomcat867

My computer slows and task manager shows firefox.exe* very large cpu usage.

My computer slows and task manager shows firefox.exe* very large cpu usage.

Сви одговори (1)

cor-el
cor-el
  • Модератор

Одабрано решење

You can try to disable OMTC and leave hardware acceleration in Firefox enabled.

  • about:config page: layers.offmainthreadcomposition.enabled = false

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window

You can check if there is an update for your graphics display driver and check for hardware acceleration related issues.