Windows 10: fiber lan speeds slow

lexsants · Mar 5, 2025

i have a hp lap top . i used to get fast lan speeds up to 1g but now im only getting 150mb max with lan connection but on wifi i can get up to 800mb. i have 2.5g plan with att fiber. what can i do to fix this problem . ive ran out of options.im also running a AX10000 router

:)

doc89 · Mar 5, 2025

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...

Lenny Paschedag · Mar 5, 2025

High bandwidth high wifi speed slow lan speed

High bandwidth high wifi speed slow lan speed. What should I do? My router is connected with a lan cable to my pc for faster connection but it seems like there is something wrong because I should be possible to get up to 250mb per second but I only get up to 30

*****moved from german to english Community *****

Surendra Kalvi · Mar 5, 2025

OFFLINE LAN SPEED

I connected two pc windows 11 and windows 10 through offline lan cable. Some time data transfer speed is very good. When restart some time data transfer speed is very slow. It change slow to high or high to slow when restart pc.

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