@izzfaris Fast roaming won't turn it on automatically, you need change it manually. You can turn it off to connect the devices to the Deco wifi network first and then you can turn it on and verify...

@ragnakore You can change one of the Deco in Diagram 1 to the router mode, while to build up the mesh network together, the 2 slave Decos should be wired to the main Deco, not the modem router,...

@jonnyv Thanks for your updates, glad to hear that it works as expected now. Generally speaking, once you enabled QoS and set it up, it will take effect within seconds. For the latency issue, cause...

@tomhawkson1990s Is modem a pure modem or is it a modem router? Cause you switched the Deco to AP mode, as my knowledge, the modem should be a modem router which you can get internet from it...

@anbessaw7 Thanks for your reply. We did a test at our lab, with WDS enabled and connect the router to the Deco network, it won't show up under online devices. We confirmed that it may relates to the...

@topouzid The Deco supports mesh network in AP mode, and fast roaming. For the differences between router mode and AP Mode, you can read https://www.tp-link.com/support/faq/2399/. Besides, Deco does...