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
    2021-03-30T06:30:00+00:00

    I'm having this problem as well. I have gigabit cable internet. I have two Macs, iOS devices, and Android devices all on the same network. When running a speedtest, anything connecting via 5 GHz WiFi gets about 500-600 Mbps. Anything connecting via ethernet gets 920 Mbps. Except my Windows 10 PC, which seems throttled at 100 Mbps.

    I have no QoS options on on my router nor on my switch, and a MacBook Pro which gets 920 Mbps when running speedtest is hooked up to the same switch running to the same router from about 4 feet away from my desktop PC. I've reset all my equipment multiple times.

    I am completely out of ideas.

    EDIT: Update, I found a fix. I was using a 10900K with a Strix Z590-I board while I waited on the 11900K release. As soon as I swapped the 10900K with the 11900K, my PC was able to get full speed. Must be some kind of weird hardware incompatibility.

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  2. Anonymous
    2021-05-13T15:41:06+00:00

    Here's a bit more info:
    TCP Global Parameters

    Receive-Side Scaling State : enabled

    Receive Window Auto-Tuning Level : normal

    Add-On Congestion Control Provider : default

    ECN Capability : disabled

    RFC 1323 Timestamps : disabled

    Initial RTO : 1000

    Receive Segment Coalescing State : enabled

    Non Sack Rtt Resiliency : disabled

    Max SYN Retransmissions : 4

    Fast Open : enabled

    Fast Open Fallback : enabled

    HyStart : enabled

    Proportional Rate Reduction : enabled

    Pacing Profile : off

    Disabling the "Receive Window Auto-Tuning Level" actually worsened the speeds.....very very strange

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  3. Anonymous
    2021-02-28T04:44:24+00:00

    Any ideas I am having this same problem.

    My upload speed is limited to 30mbits but when I connect with my Mac laptop I am getting 5-600mbits upload. Same with other computers I have tested, it is only the WIndows 10 desktop that is having this issue. I have tried everything I can find online and no go, I am about to just reinstall windows but I would really prefer not to do that.

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  4. Anonymous
    2020-09-29T04:48:03+00:00

    Hmm it's weird. Check anyway if you have malicious files with these 2 programs.

    AdwCleaner to clean browser: https://www.malwarebytes.com/adwcleaner/

    Malwarebytes to clean pc: https://malwarebytes.com/

    Also, if you have a third-party antivirus, uninstall it and try again.

    Try these command too

    Step to run the System File Checker tool (SFC.exe)

    Note: Respect the spaces or simply copy / paste the commands.

    Click on windows start button, type CMD

    - Right click on " prompt command " and " run as admin "

    Now type this commands

    DISM.exe /Online /Cleanup-image /Scanhealth

    - Press Enter.

    Then, this command and Enter.

    DISM.exe /Online /Cleanup-image /Restorehealth

    Then make the following commands.

    sfc /scannow

    _________________________________________________

    Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.

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