Ethernet performance remains at 1gbit even after relocating to a new apartment.
Ethernet performance remains at 1gbit even after relocating to a new apartment.
It's quite unusual. Over the last eight or nine months I've consistently received 1Gbps from two different providers without any issues. About two weeks ago I relocated to a new apartment and ordered another 1Gbps plan; everything functioned normally. I continued using my own router (QOTOM with pfSense) which I had prior to that. I own two computers, but for some reason neither of them can reach the full 1Gbps speed—they cap around 400Mbps. Changes include swapping my old Zyxel router for a switch, and the performance remains similar. The new ISP is fiber-based, and Ethernet still connects from the fiber box to my router as before. Previously, with the old ISP, I needed to connect via VLAN 101, which was removed in pfSense after switching providers. Today, a technician visited and tested the setup; all cables showed no issues, and he measured speeds of around 940Mbps in both directions on his equipment. When I connected my device directly into the switch port, the speed stayed consistent. I also tried plugging it into another empty port on the switch or even into the fiber box itself, but the result was unchanged. If I connect directly to the router, the performance remains the same. I've checked and reinstalled Ethernet drivers, but nothing helped. My Windows 10 laptop (Intel i211, 2400G, 16GB RAM) and my Windows 11 PC (MSI B450M Mortar Max, RTL8111H-CG, 5600X, 16GB RAM) are working fine. All cables are Cat6 S/STP. I've changed to Cat6 UTP cables afterward. Background software like antivirus, Google Drive, Radeon, and various apps are running normally. This is the ISP's Nokia fiber box. If you can assist in diagnosing this, it would be greatly appreciated.
Start by testing directly with your modem to eliminate router issues. Once the problem is identified, connect the router. Also, verify if your Ethernet cables are up to date—your speed and duplex settings might be incorrect or your cables can't support 1Gbit. Check these details in your network adapter settings under configure and advanced. Try again using fast.com for confirmation.
If I connect straight into the fiber box, it works just like before. "Yesterday a technician checked the setup, tested my cables, everything was fine." The Ethernet configurations are set to default, speed and duplex adjust automatically. fast.com shows improved performance, though it's still not reaching 1gbit.
Mainly the tools i've relied on on both devices, with the same setup on his laptop.
This seems unusual. I usually experience slower performance with the app.
I attempted this using the old ISP setup with a Zyxel router configured without a DHCP server. It functioned as a simple switch. I switched to a real switch (TL-SG1008P) and even tried the same model that had previously worked well. The outcome remains consistent. I’m puzzled since it seems to rely solely on the built-in Ethernet controllers, which I don’t understand how they could work without additional configuration. After removing them and their drivers, all settings were reset, yet the performance stayed the same.
Yah, something is really off here but it's definitely not an easy/clear fix. The fact that the ISP tech using the same cable got pretty much gigabit speeds but you don't is really weird. I mean I don't suspect the controller because it would just fail to negotiate gigabit and drop to 100Mbps instead but you're like in the middle. You don't have any AV software or new 'gaming' optimizer software do you?