Windows 11

Ethernet card: Killer E3100X 2.5 Gigabit Ethernet Controller

TP_Link Archer VX1800v (with latest firmware)

https://www.tp-link.com/au/home-networking/dsl-modem-router/archer-vx1800v/#specifications

I bought Archer VX1800v but Ethernet connection of Windows 11 disables itself sporadically when Speed & Duplex property of ethernet card is set to be Automatic (which is even the default value) in Windows settings. Now and then Ethernet card disables itself and in the network page of Control Panel of Windows 11, the ethernet card says "Ethernet cable is not plugged". The moment I set Speed & Duplex to 100 Mbps Full Duplex ethernet card enables itself back and I can connect to internet over ethernet cable. But of course with 100Mbps I lose speed so I wonder why Automatic value for Speed & Duplex works sometimes but then it causes the ethernet card to deactivate itself. With 100 Mbps Full Duplex ethernet card never disables itself.

I am not sure which one is causing the issue here about this Negotiation speed rate. Windows 11 or Archer VX1800v?

I have an old Airties modem router and I have not encountered this kind of issue with ethernet connection for years in this Windows 11 laptop with Speed & Duplex is Automatic.

There is no setting in Archer VX1800v to set Negotiation speed.

Wifi is OK during this ethernet issue occurs.

There is no issue on Macbook Air with Ethernet connection with Archer VX1800v. It only happens with this Windows 11 laptop.

How can I fix this issue?