Question Persistently low network speeds on PC with a 1 Gbps service ?

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Do you have another pc type device that is connected via ethernet. The goal would be to test inside your house between 2 devices and see what you get for transfer rates and compare that to the speedtest numbers. There is a old line mode tool called IPERF3 that can be used to test transfer. You could i guess use a file transfer and watch the numbers in resource monitor, just be aware some numbers in resource monitor are BTYES/sec and other BITS/sec.

You could try a USB bootable linux image. This will not damage your windows install. Most images have a browser preinstalled and you can run the same speedtest you do in windows. This is mostly to confirm it is some strange issue with windows driver or configurations. If the linux image has the same slow issue then you more suppect hardware.
I tried booting off Ubuntu, and my speeds were insane!
914 down 38 up, so something in windows is likely slowing down my network.
 
Managed to fix this issue with the command:
netsh int tcp set global autotuninglevel=normal

When I talked to Gigabyte support, they did suggest disabling autotuning by command, but resetting it to normal ended up fixing it!
Currently getting 768 down 38 up😎

For anyone else facing slow internet speeds isolated to Windows 10, running this command can help.
 
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It's really weird, since someone said you shouldn't disable auto tuning


Apparently your situation is different.

Which version of Windows 10 you are running?

https://en.wikipedia.org/wiki/Windows_10_version_history
W10 version: 22H2
Im not sure what auto tuning was set to before Gigabyte suggested I disabled it yesterday, but setting it back to normal seem to fix everything.
 
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