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Slow upload speeds (1.0 - 3.0) I have gigablast 940/35

Upload speeds are slow and I have packet loss (uncorrectable errors in log).  The best upload I've seen using Cox speed test is just shy of 3.0.  I pay for the gigablast, so max speeds would be 940/35.  Obviously, no one sees max, but I should be getting a lot better than what I'm getting.

Download is alright as it maintains around 800.  It's the upload that's a problem.  I am in the Pensacola, FL area just off Lillian near the Alabama border.

  • Hello Squidlyf,

    I am sorry to hear that you have been experiencing upload speed issues. There are some steps that can help diagnose and resolve speed issues. When you have a chance, can you go through the steps below and let us know the results?

    1. Check your connections: Please ensure that your connections are secured, your cables are undamaged and are in good health, and bypass any splitters by making a connection directly from the wall to the modem. This will help ensure that your modem is receiving the best signal from us.

    2. Restart your system: Please reboot the modem (and router) by unplugging the power to the modem (and router) for 30 seconds and then reconnect it. This will refresh the connection and can help resolve several errors and ensure your equipment are communicating with each other.

    3. Make a wired connection: Connect a computer or device directly to the modem using an ethernet cable. Make sure that WiFi is turned off on your device. This will help rule out any trouble with the wifi. If you are unable to make a wired connection, check out for tips and tricks on how to ensure you have the best connection from your WiFi.

    4. Bypass Router: If you are using a stand-alone router, try bypassing it. You can connect via a wired connection directly to the modem. You may need to reboot the modem again to re-establish a handshake with the new device connected.

    5. Perform a speed test: Run a speed test at Then check out this article on

    Tiffany R.
    Cox Support Forum Moderator