Restarting the router should restore maximum performance on your wired device.
Restarting the router should restore maximum performance on your wired device.
I looked through the forum discussions, but no one else seems to have the same problem. I recently purchased a new router and noticed my wired connection speed dropped from about 100-120 MB/second to roughly 9-10 MB/second. After rebooting all devices—router, NAS box, and computer—I still experienced slowdowns. Eventually, I discovered that resetting the router should restore normal speeds. I’m hoping there’s a specific setting I should check in the router’s configuration menu.
I’d replace the router with a fresh one. There shouldn’t be any adjustments that limit speed once it’s running for a while. It seems like it might be overheating, so exchanging it under warranty would be a good idea.
I resolved the issue by changing the network adapter settings. It was reverting to 100 mbit instead of gigbit. I adjusted the dropdown in Device Manager—right-click the adapter, select properties, then go to the Advanced tab and set the speed and duplex to "1.0 gbps Full Duplex." No reboot was needed. Additionally, I turned off the "energy efficient Ethernet" option in the same settings.