Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Avatar for Username

Rechercher dans l’assistance

Évitez les escroqueries à l’assistance. Nous ne vous demanderons jamais d’appeler ou d’envoyer un SMS à un numéro de téléphone ou de partager des informations personnelles. Veuillez signaler toute activité suspecte en utilisant l’option « Signaler un abus ».

Learn More

Ce sujet de discussion a été archivé. Veuillez poser une nouvelle question si vous avez besoin d’aide.

When Firefox is on, Desktop Window Manager consumes a lot of RAM

  • 4 réponses
  • 2 ont ce problème
  • 1 vue
  • Dernière réponse par unavailable

unavailable
unavailable
more options

I have multiple monitors and most often have Firefox windows open on each. Lately, I've been noticing that the Desktop Window Manager process is consuming a huge amount of RAM. At the same time, consumption completely disappears with the closing of Firefox windows. Video: https://i.imgur.com/pHCa7Hh.mp4 (I left it for a while then closed Firefox windows) After a while, I noticed that already 13 GB of memory is being used by DWM. I don't know if sites affect behavior, but most often I have https://music.yandex.ru/home open

OS: Windows 11 (Microsoft Windows [Version 10.0.22621.1928]). Firefox: 115.0.1 (64-bit) Screen setup: 1 - 3840 x 2560 with 200% scale, 2 - 1920 x 1080 with 100% scale.

I have multiple monitors and most often have Firefox windows open on each. Lately, I've been noticing that the Desktop Window Manager process is consuming a huge amount of RAM. At the same time, consumption completely disappears with the closing of Firefox windows. Video: https://i.imgur.com/pHCa7Hh.mp4 (I left it for a while then closed Firefox windows) After a while, I noticed that already 13 GB of memory is being used by DWM. I don't know if sites affect behavior, but most often I have https://music.yandex.ru/home open OS: Windows 11 (Microsoft Windows [Version 10.0.22621.1928]). Firefox: 115.0.1 (64-bit) Screen setup: 1 - 3840 x 2560 with 200% scale, 2 - 1920 x 1080 with 100% scale.
Captures d’écran jointes

Solution choisie

It does not! And I disabled "Use hardware acceleration when available", now there is no memory consumption.

Seems like hardware acceleration is a culprit

Lire cette réponse dans son contexte 👍 0

Toutes les réponses (4)

unavailable
unavailable Auteur de la question
more options

I don't think it's OK

unavailable
unavailable Auteur de la question
more options

Bump, still not fixed.

Appears only when I move the Firefox window to the built-in display (1920x1080 with 100% scale)

zeroknight
zeroknight
more options

Does it also happen in Troubleshoot Mode?

unavailable
unavailable Auteur de la question
more options

Solution choisie

It does not! And I disabled "Use hardware acceleration when available", now there is no memory consumption.

Seems like hardware acceleration is a culprit