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Internet Speed

Published: at 05:20 AM

There are safe and unsafe ways to tweak Windows TCP settings for improving internet speed, along with a link to further resources. The safe tweaks aim to optimize performance, while the unsafe tweaks should be approached carefully as they may cause problems if not properly understood.

Optimizing your internet speed can often be achieved by tweaking TCP (Transmission Control Protocol) settings on your Windows machine. Here are some settings that can help speed up your internet connection.

Safe Tweaks

These tweaks are generally safe and can improve the performance of your internet and network connections.

  1. Enable Chimney Offload:

    netsh int tcp set global chimney=enabled
    

    This allows the network adapter to offload the TCP processing to the network card, freeing up system resources for other tasks.

  2. Enable Data Center TCP (DCA):

    netsh int tcp set global dca=enabled
    

    This improves the efficiency of TCP traffic by optimizing the way the network is handled by the operating system.

  3. Enable Network Direct Memory Access (NetDMA):

    netsh int tcp set global netdma=enabled
    

    This setting improves the network performance by allowing data to bypass the CPU when being transferred between memory and network devices.

Unsafe Tweaks

These settings can have unintended consequences and should be used with caution. Make sure you understand the impact before changing them.

  1. Autotuning Level: The autotuninglevel setting allows you to control how Windows manages TCP receive windows. It can be set to:

    netsh int tcp set global autotuninglevel=enabled/restricted/highlyrestricted/disabled
    
    • enabled: Default setting.
    • restricted: Limits the buffer size.
    • highlyrestricted: Restricts the buffer size even further.
    • disabled: Disables autotuning altogether.
  2. Congestion Control Provider: TCP congestion control can be adjusted by choosing the provider:

    netsh int tcp set global congestionprovider=ctcp/none
    
    • ctcp: Enabling this allows TCP to use more advanced congestion control.
    • none: Disables the congestion control mechanism, which is not recommended in most cases.

Additional Resources

For more details on hidden Windows tweaks to speed up your internet connection, refer to this article:


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