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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...

    Gary

    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,

    Strive


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    Thursday, December 5, 2019 8:53 AM