Windows 10: Aggregated link speed resets to 100 mbs after restarting pc

I have 1000mbs internet and can get that with my pc but only if I change my aggregated link speed back too full 1gbs in device manager. After restarting my computer it will reset to 100mbs and sometimes it will change in device mangers but not in the settings app for no reason I can see. Its not broken but something is wrong I think. recently upgraded to windows 11 and 1000mbs internet at the same time any ideas would be great

:)

 

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?

 

Super slow wifi speed and also big lag spikes

im also having the same problem. I had 2.3gb download speeds but my upload was 100 mbs. So trying to fix my upload speed, i came across one of lesters comments and i followed step by step then ended up with 50 mbs download and 30 mbs upload.

 

After Installing Latest Windows Update WiFi Speed Reduce to 8 MB/S From 40 MB/S

Hi Smith ,

Thanks for your quick response.

I do all the above mentioned step , the result remain same. Still in window device wifi speed is 8 mb/s where as my other devices (ios) in same wifi the speed is 40 mb/s.