Windows 10: My ethernet link speed is capped at 100Mbps.

My internet link speed is capped at 100 Mbps. I am using a cat7 cable and my ethernet port is Realtek Gaming GbE Family Controller driver version 1168.8.515.2022. my wireless internet is achieving speeds of around 200 Mbps so i see no reason why my ethernet is slower. Please help me fix this

:)

 

Ethernet speed capped at 100 Mbps

I have a Lenovo Legion T5 28IMB05, and my Ethernet connection is capped at 100 Mbps.

Things I have already tried and didn't work:

• Switch to another cable. Originally, I had a CAT5e and as my speed was capped, I bought a CAT6. It didn't help (though I'm still using it)
  
• Force the driver to use 1000 Mbps full duplex
  
• Try my cable and router with another PC. It works
  
• Try to boot from a live USB running Ubuntu 21.10. It also didn't reach full speed
  

The funny thing is that if a plug a USB Ethernet adapter (TP-link UE330), it reaches gigabit speeds with that cable and router; and then if I reconnect the cable to the Ethernet port on my PC, IT WORKS at gigabit speeds for as long as I have the PC turned on. When I restart, it goes back to 100 Mbps.

As of course, I prefer not to have to depend on a USB dongle to reach full speed on my network, what can I do?

 

My second Router the Ethernet is capped at 100mbps HELPPPP



sorry here is a picture of the Router Details

 

Speed stuck at 100Mbps on 1Gb Fibre

PC is custom built

Speed and Duplex were set to Auto Negotiate but Ethernet Speed was stuck at 100Mbps which is why I have forced it to 1Gbps, but the Ethernet Speed remains the same 100Mbps

Please read the original post as stated the PC is connected directly to the Router via Cat8 Cable.

Power Managment is not the issue everything related to saving power is Disabled

I have even restarted my PC in Safe Mode with Networking and as stated before The Speed and Duplex remains set to 1Gbps but the Ethernet Speed is still at 100Mbps

This means it is not an external program throttling my speeds