It depends on how good the system is that you have now. Speed loss is NOT supposed to happen with a mesh system like this one. But I found raw speed of my network dropped when installed Velop. Perhaps that was because I was using a fairly new high end wireless router. If yours is older, this will probably be faster. And speed should remain constant across the network. The nodes are not really extenders. The are essentially duplicates of the one attached to the cable modem. A single network is created with the same name and password covers the entire house. The main advantage of a mesh.