Windows 10 Measures Drop in Bandwidth that Windows 7 Does not RRS feed

  • Question

  • Hello,

    I recently upgrade some of my managed sites to Windows 10 PC's.

    I monitor their bandwidth to my management Server.

    The new Windows 10 PC's are measuring a 2/3's drop in Bandwidth as compared to a Windows 7 PC at the same location.

    For example, two PC's running the same Hardware but one is Windows 7, and one is Windows 10.

    I have a 25 Mbps connection from this site to my management server.

    The windows 7 PC measures consistently between 20 and 25Mbps, depending on time.

    The windows 10 PC consistently measures ~5 Mbps.
    I tested this using Windows Net Bios transfer (copy/paste), manual FTP, on-going iPERF measurement tool, and a few other freeware monitoring tools.
    I see the same drop, no matter the tool, and all these tools measure 20-25 Mbps on Windows 7.

    Things I tried:

    • All drivers are up to date. Tried the Windows Update drivers, as well as the Dell specific ones
    • Installed a USB NIC - Same results
    • Replace the whole PC - Same results
    • Turned off/on too many settings to list on the NIC - Same results

    Relevant Info:

    • All these PC's (Win 7/10) plug into a Cisco 5505 Firewall which establishes a VPN, and terminates on a Cisco 5516. I know this is a bit non-standard, but again, the Windows 7 PC doesn't have any issues.
    • Escalated to Dell, reached the top tier of their Support, and they couldn't solve it.
    • The network these PC's are on is a dedicated WAN, there is no Internet on them.

    Why does Windows 10 measure less bandwidth, or utilize less bandwidth than Windows 7?

    Wednesday, December 4, 2019 6:24 PM

All replies

  • Hello Dr.Souza,

    Could you make a short (few seconds long) network trace of both the Windows 7 and 10 connections during one of your performances tests and make them both available here?

    This might just be a first step in the analysis process; a trace of the Event Tracing for Windows (ETW) Microsoft-Windows-TCPIP provider might be necessary to get deeper insights. However, a plain network trace might be enough to either recognize what is happening or identify what might be a useful next step...


    Wednesday, December 4, 2019 8:43 PM
  • Hi Dr.Souza,

    Thank you for posting here.

    This forum is discussing and asking questions about Network Monitor Tools , it will be more appropriate to ask your question at Support for business. Thank you for understanding.

    Best regards,


    MSDN Community Support
    Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. This can be beneficial to other community members reading this thread. If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.

    Thursday, December 5, 2019 8:53 AM