Windows 10: Fix Slow LAN speed on Windows 11/10 computer

WinClub · Dec 4, 2021

If you are facing slow internet speed on your PC, in this guide we have a few solutions to fix slow LAN Ethernet speed on Windows 11 or Windows 10 computer. These days, slow internet is a nightmare. Our lives are entirely dependent on it. Be it work, entertainment, or classes, it has its uses everywhere. […]

This article Fix Slow LAN speed on Windows 11/10 computer first appeared on TheWindowsClub.com.

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doc89 · Dec 4, 2021

LAN Network Slow speeds

update, problem fix with the following. Thanks 100MB/s on large files

This seemed to work for me:

Disabling “Large Send Offload (LSO)”

Large Send Offload is a technique of improving network performance while at the same time reducing CPU overhead. Apparently it does not work very well, so it was suggested to disable it. If you would like to know about LSO, check this MSDN article from 2001 (Task Offload (NDIS 5.1) (Windows Drivers)).

LSO is an option located in a Device Manager under your network adapter, so this solution requires Administrator Privileges.

Follow these steps:
1.Open Start Menu, right-click on Computer and select Properties
2.Under Control Panel Home located on the left side of the window click on Device Manager
3.You will get a list of all devices on your machine. Expand Network Adapters.
4.Find your Network Card and double-click on it.
5.Select Advanced tab. You will get a list filled with different options.
6.Select Large Send Offload V2 (IPv4) and set the value to Disabled
7.Do the same for Large Send Offload V2 (IPv6) if it is available
8.Click OK

After clicking OK, tried to send a file over the LAN network. Transfer speed started very slow, but it was gradually picking up speed. Decided to restart the computer and try to send that file again and this time it worked like a charm.

Now that sending of files worked as it should, also checked speed for receiving files. It turned out that it was still slow but all that was needed to fix was to disable Large Send Offload V2 on the other computer. Once done, problem was solved for receiving files as well.

Hope this works for you guys / girls
Click to expand...

E for Excel · Dec 4, 2021

LAN transfer speed fluctuation

Look into following links for possible solutions

http://www.howtosolutions.net/2013/06/fixing-sl...

Slow LAN speed on Windows 10 PCs [FIX]

Remon Ont · Dec 4, 2021

Slow Internet speed on only one computer.

Hi Cody,

Slow internet speed on one of your computer could be due to the following:

Outdated network adapter driver

Different Wi-Fi chipset

Computer processing speed

Make sure that the network driver of your computer(s) are always updated.

We also suggest you to contact your internet service provider for them to check your internet connection speed and give you more information.

Feel free to post back if you have other concerns.

Windows 10: Fix Slow LAN speed on Windows 11/10 computer

Fix Slow LAN speed on Windows 11/10 computer

Fix Slow LAN speed on Windows 11/10 computer

Fix Slow LAN speed on Windows 11/10 computer

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