Windows 10 limiting my internet speed?

Anonymous
2020-09-28T22:02:37+00:00

I have a PC running windows 10, all of the latest updates have been installed and drivers are up to date and it is connected to a ethernet cable for internet. I have a gigabit ethernet service. When I run an internet speed test I get somewhere between 14 -40 Megabits/sec download and 15-30 Megabits/sec upload (on a good day). When I connect my laptop to the same ethernet cable my download speed is between 650 and 750 Megabits/sec and my upload is closer to 50 Megabits/sec. I have tried many suggestions online such as turning off automatic updates, and removing the reserve bandwidth for updates. changing the network adaptor settings to force gigabit speed rather than auto assign. I have even tried installing a new gigabit network card to see if it was a motherboard issue and no luck. I cant seem to find anything online to help me resolve this issue. Please help.

Windows for home | Windows 10 | Internet and connectivity

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Anonymous
2021-05-04T10:45:03+00:00

Hello,

I had same issue. It was solved for me via following command in cmd. Previous value was disabled.

netsh int tcp set global autotuninglevel=normal

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  1. Anonymous
    2020-09-28T22:21:13+00:00

    Hello Garnet282, sorry about your problems. My name is Marco and I am independent advisor. So, I will do my best to help you.

    Is your network card on 2.9ghz or 5ghz?

    If your devices allow it, connect to the 5 GHz Wi-Fi frequency

    Also move your router to another location, there may be interference

    Check if you have the lastest version of Windows 10

    https://support.microsoft.com/en-us/help/402766...

    And update drivers of your network card and wifi card

    https://support.microsoft.com/en-us/help/402844...

    Other solution is to change " delivery optimization settings "

    Press Windows + l keys and search for Delivery optimization "

    Scroll and click on " advanced options " 

    Toggle on both options under the Download settings and move the slider to 100%.

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  2. Anonymous
    2020-09-28T22:42:40+00:00

    I am using wired internet via an ethernet cable, not wifi

    no interference as it is hardwired and works fine when the cable is connected to my laptop.

    drivers for the network card are all up to date, and I have even tried a new network card and the latest drivers for it

    delivery optimization settings have been checked.

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  3. Anonymous
    2020-09-28T23:26:33+00:00

    Sorry, I mixed your problem with a similar one ...

    1 ) Try this, right-click on Windows start menu and go Settings.

    Open Network & Internet

    Select Proxy in the left pane. In the right pane, disable all options.

    2 ) Disable Windows Auto-Tuning Feature

    Open windows start menu and type: cmd

    Right-click on " command prompt " and select Run as admin

    Type this following command: netsh interface tcp show global

    Look for the "Receive Window Auto-Tuning Level feature" , if it If it is displayed as 'normal' please deactivate it as follows:

    netsh int tcp set global autotuninglevel=disabled

    Now check if the speed is ok.

    3 ) Disable Large Send Offload

    Right-click again on Start button and select " Device manager "

    Double-click on your Network Card and click on the Advanced tab

    In the drop-down list, select Large Send Offload V2 (IPv4) and set the value to Disabled

    Do the same for Large Send Offload V2 (IPv6)

    Click OK.

    1. Check your dns settings.

    Press Windows + r keys and type: NCPA.CPL

    Right-click on your network card and select Properties

    Select Internet Protocol Version 4 (TCP/IPv4) and go to Properties.

    Checks if the 'obtain an ip .... and Obtain DNS server ....' box is checked on automatic. This must other on auto.

    You can do a test with the google dns if you check Use the following DNS

    Google's Public DNS addresses 8.8.8.8 and 8.8.4.4

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  4. Anonymous
    2020-09-29T00:52:59+00:00

    Not to worry, I appreciate any assistance you can provide!

    1. I have disabled all proxy settings
    2. auto tuning is disabled
    3. large send offload is disabled for both IPV4 and IPV6
    4. I've tried both with the auto DNS and with Google's public DNS, no difference.

    Thanks for the advice but these don't seem to be the issue.

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