@bigshooTer39 Cables will cause it to drop to 100 as that speed uses only half of the wires where all are needed for faster speeds. I would test them again and check the ports on the router for bent...

@Kidkong If you want to use two routers, you set up the main router in router mode and the other in AP mode. The AP mode router is the one you would turn off or on to control the network.

@Gor-Mahia1 I would think you need to set up a mesh network. If all the routers are are onemesh, you should be able to do it.

@Maxaduke the main thing with an extender is you need to place it where there it gets a good strong signal from the router. Place it closer to the router, sort of half way or less. Also try moving...

@FalkumelvaBob few things... Your Cox modem should be in 'Bridge mode' so it acts just as a modem and not also as a router. VPN can slow down networks depending on the one used and how it is...

@ZachAttack I would try a factory reset and see if the problem still exists. If the WIFI works and the Ethernet does not and multiple devices using known good cables does not work on the Ethernet...