I’m using an Asus RT-AC1900P router linked via Ethernet (Cat8) bridge to an identical RT-AC1900P and for the life of me I can’t establish a solid WIFi network that will download more than 80Mbps on 2.4 GHz and 200Mbps on 5Ghz on any of my Apple devices (Apple iPhone XS Max and a 4th Gen iPad)...