We have a small wired (Ethernet) LAN. It has a two Macs, a AppleTV and a NAS device. There's an unmanaged Netgear switch to connect it all and an ASUS router. The router connects to the Internet via a 1Gb/s Motorola DOCSIS 3.1 cable modem. I pay for 1GB/s and generally when I run Speedtest I get...