I just bought the GT-AX6000 and flashed it with Merlin 388.2_2. I upgraded from RT-AC68U. I tried various configurations of Smart Connect (default rules, custom rules), MIMO, WiFi Agile Multiband but am not getting any consistent client connections on either 2.4G or 5G. By that I mean client connects to 5G with good signal (sometimes yes, sometimes no). I then configured the RT-AC68U as AiMesh and put it downstairs (I have 2 story 3500 sq ft home). Still not getting any consistent client connections on either 2.4G or 5G with various configurations of Smart Connect, MIMO, WiFi Agile Multiband. I reboot the router with each configuration and then check the network map. I have searched the forums here and internet but the guidance seems to be "all networks are different, you just have to figure out the best configuration". Is there any general guidance on what to enable/disable? Should I remove the RT-AC68U from AiMesh (even though when clients connect to it it seems to help the signal)? I've seen suggestions to "bind" devices to particular AiMesh nodes. Also, seen suggestions to exclude devices from 2.4G by Wireless MAC Filter. Any suggestions would be appreciated.