I've been experiencing an issue with my wired Ethernet connection lately. About a week ago, I started noticing slow speeds, and when I ran speed tests, I consistently got results of only 100 Mbps. My wireless connection seems fine and delivers the expected speed. After checking the link speed in Windows 11, it confirmed that it's limited to 100 Mbps. My setup includes an AsRock B650M-HDV/M.2 motherboard with a Realtek RTL8125BG network adapter and I'm on a 1Gbps/500Mbps fiber connection. I've tried several troubleshooting steps: I uninstalled the adapter in Device Manager, updated the network drivers for Realtek, switched Ethernet ports on my router, and attempted to change the network adapter settings to 2.5 Gbps full duplex, but that caused my connection to keep disconnecting. Even after reverting to 1 Gbps full duplex, Windows still shows a capped speed of 100 Mbps. This issue just started last week, and nothing in my hardware setup has changed. Any suggestions?
2 Answers
It sounds like there might be an issue with your Ethernet cable or the port you're using. Have you tried testing with a different cable to see if that improves your speed? If your current cable is showing 100 Mbps, it could just not be rated for higher speeds or might be damaged. It's worth checking!
Have you tried using the default drivers from Windows instead of the Realtek ones? Sometimes, the custom drivers can cause issues. If you haven't tried that yet, uninstall the Realtek drivers and let Windows manage the Ethernet. See if it helps!
I tried that, but it didn't resolve the issue.