I just moved into a new place where I plugged my devices—like my Xbox and Apple TV—directly into the modem and was getting fantastic speeds, around 500-600 Mbps. Then I discovered that the house has wall-mounted Ethernet ports in every room, so I switched everything to those. Unfortunately, now my speeds have dropped to about 80-90 Mbps. What could be causing this slow down?
4 Answers
You might be running into issues with the wiring. It’s possible the wall cables are only using two pairs, which limits you to 100 Mbps. It's worth checking the wall plates to see if there’s any older equipment like a switch that's slowing things down.
Your plugs need all four pairs to achieve 1 Gbps speeds. If anything is miswired at either the wall end or the patch panel, you could be stuck at 100 Mbps. A simple cable tester could help you check if everything's connected properly.
It really depends on how those wall outlets are wired up. If they connect to a patch panel and then to the same router as your direct cables, you should still be getting good speeds. But if they’re connected to an old 100 Mbps switch, that could be your bottleneck.
Sounds like you may have a wiring problem. All connections need to be in order—if even one wire isn’t right, you’ll drop down to significantly lower speeds. Getting a good look at the wiring might give you some answers.

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