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
封存

Slow Internet Download Speeds Running Mozilla

Tom : replied
Tom :

I have tracked down the situation where my Internet download speeds drop from about 598 Mbps to around 267 Mbps after I open Mozilla. I am running a desktop computer with Windows 11 (updated) and Edge and Chrome. I am hardwired directly to my Xfinity modem (no WiFi connection). When I close Mozilla, my speed goes to 598 Mbps, and when I open Mozilla, my speed drops to 267 Mbps. This seems excessive and unacceptable. Are there any settings or anything to adjust, not to have Mozilla be such a drain on my system?

I have tracked down the situation where my Internet download speeds drop from about 598 Mbps to around 267 Mbps after I open Mozilla. I am running a desktop computer with Windows 11 (updated) and Edge and Chrome. I am hardwired directly to my Xfinity modem (no WiFi connection). When I close Mozilla, my speed goes to 598 Mbps, and when I open Mozilla, my speed drops to 267 Mbps. This seems excessive and unacceptable. Are there any settings or anything to adjust, not to have Mozilla be such a drain on my system?

所有回覆 (2)

running Mozilla what? There is no umbrella Mozilla product, you might want to identify the actual product that is causing you issues.

OK my bad. Thunderbird - the email application is what is causing the slowness.