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

搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多
Solved 封存

Firefox is slowing down significantly while I have "more" demanding games running

zeroknight replied
Hollow

Hello, the description is the same as in the title: Firefox is slowing down significantly while I have "more" demanding games running I'm talking about a game like assassin's creed mirage mostly on ultra for example.

It all started with the purchase of a new computer, on the previous one I did not encounter such a problem. It manifests itself in the way that the video is slightly desynchronized with the sound + I can see a significant difference (delay) when scrolling the pages.

My current rig: Intel Core i7-14700KF Nvidia RTX 4080 32GB of ram running at 6000mhz (G Skill Intl F5-7200J3445G162x16GB ) 2x Kingston SKC3000D2048G 2TB


I understand that the GPU focuses on the game but can't it be improved somehow? The rest of the applications on the computer work normally In my opinion, the computer does not seem so weak that it cannot handle Firefox and the game simultaneously.

Send help please 😊

Hello, the description is the same as in the title: ''Firefox is slowing down significantly while I have "more" demanding games running'' I'm talking about a game like ''assassin's creed mirage'' mostly on ultra for example. It all started with the purchase of a new computer, on the previous one I did not encounter such a problem. It manifests itself in the way that the video is slightly desynchronized with the sound + I can see a significant difference (delay) when scrolling the pages. My current rig: Intel Core i7-14700KF Nvidia RTX 4080 32GB of ram running at 6000mhz (G Skill Intl F5-7200J3445G162x16GB ) 2x Kingston SKC3000D2048G 2TB I understand that the GPU focuses on the game but can't it be improved somehow? The rest of the applications on the computer work normally In my opinion, the computer does not seem so weak that it cannot handle Firefox and the game simultaneously. Send help please 😊

所有回覆 (2)

Most likely this is due to high GPU usage (95%+), when I turn off the game then Firefox returns to fluent work. I understand why it works this way considering the high GPU usage, but is there by any chance a workaround for this?

選擇的解決方法

You could assign Firefox to a different GPU:

Windows Settings > System > Display > Graphics > Add firefox.exe > Options > Power saving GPU

Or you could shift it to CPU by disabling hardware acceleration.