Slow Wi-Fi Download Speeds, but Upload Speeds OK?

Discussion in 'Surface Pro 6' started by sloppyseconded, Dec 17, 2018.

  1. sharpuser

    sharpuser Super Moderator Staff Member

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    Well, you will likely want OneDrive back, but not until you've tested your connection. Excellent service IMO.
     
  2. sloppyseconded

    sloppyseconded New Member

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    I seem to have found at least part of the problem. Continuing to Google and troubleshoot, I came across a recommendation that was borne of the Creators update. Someone recommended to run PowerShell as an admin and disable the receive segment coalescing (RSC). I used this command:
    Disable-NetAdapterRSC -Name Wi-Fi

    And voila - my speed test downloads went from 3 to 70 Mbps. Then I rebooted and used the same command except with 'enable' and it immediately went back to embarrassing speeds. I rebooted and toggled two more times to make sure everything else remained constant, and it did. This is definitely a MAJOR component of my issue, and it's got to be trickling down from Microsoft because it's definitely not anything I have changed manually prior to now. Even with RSC disabled, my Surface Pro barely reaches half the download bandwidth of my XPS 9370 (Windows 10) and my Latitude E7440 (Windows 7) using the same network.
     
  3. sharpuser

    sharpuser Super Moderator Staff Member

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    Okay, good work. “Physician, heal thyself.”

    It could be that the corporate server your VPN account is on has some excess latency due to how it handles packets.

    Could you try to login to your local account only, and access the Web /WiFi without VPN. That should prove the problem not to be yours.
     
  4. sloppyseconded

    sloppyseconded New Member

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    As you requested, I created a local account under my administrator account, rebooted, and logged in as that local user. It did not have any affect on the download speed/bandwidth, either via wi-fi or over ethernet.

    I still don't understand why my Surface Pro download is only half of my much older XPS's. I just got a new Linksys modem for my home today. XPS speed test results - 155 Mbps. Immediately then tested the MSP6 - same service provider, same wi-fi network, same band, same channel - 68 Mbps. Less than half...
     
  5. sharpuser

    sharpuser Super Moderator Staff Member

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    Okay, now you've got me mad about this, too. Thinking ...
     
  6. sloppyseconded

    sloppyseconded New Member

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    Same. I'd racked my brain for days on days before even posting. I usually try to figure it out myself, but I'm all out of ideas (and time). 70 Mbps is tolerable, it's just much tougher than it would otherwise be if I didn't know definitively that my internet connection is capable of so much more. I frequently work remotely and from the road, so ability to access and download files from my company's various network drives is crucial. I really don't want to go back to the E7440, the battery life is abysmal.
     

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