I've already got an isolated Guest WiFi network, segregated from the main network. It is as fast and responsive as the main network.
2nd AP for Trunked Wifi Guest Network
- This is all done through the VLAN & Virtual Wireless GUI, for the most part (also used Basic > Network to set up br1, DHCP, etc.).
- AP3 and Gateway have Port3 each tagged as shown.
- All of the APs and Gateway are running FreshTomato 19.1 (various ARMv7 Processor rev 0 (v7l) 800MHz dual-core boards). [they are very similar hardware, though...
2nd AP for Trunked Wifi Guest Network