@David-TP I used Deco M4 as router (Unifi) Login. The speed is not improving. Not yet try disable the 2.4ghz David-TP wrote @SylvesterChua Hi, Have you tried to keep the Unifi router as the main DHCP...

I purchased the 4 Units of Deco M4 and setup the Unifi 500mbps PPOE and is successfully linked with WIFI. However, the test speed for Main Deco M4 is around 250mbps (50% of Unifi Speed of 500mbps). I...