@JGC9 👍It's not how you want to check or setup the router, Ethernet connected is best as you will have a lot more control. You may wish to step back and try a few variants, if it was me, i would switch of all the smart wi-fi first, speed test on the router Ethernet to get the baseline speed which you should get up near your 900mb/s, wireless Wi-Fi really needs all devices off apart from the one you use to test, about 6' away from router, record that speed, wifi6 device will be up close to your 900 also. Next one Smart wifi switched on and settled, so you know same rule about 6' away, your device will always show what it is connected to that device as it's sync, the true test is speed from the smart wifi to the router via speed test, record its result also and if you wish you can pop ethernet on its connection to speed test it also this 100% proves the smart device because it has to send the signal over the wireless connection to the router and lets you see how good the mesh is working, (readings should be close to the same) if not then your device may not be latching on to the correct node. I am assuming that you are using the wireless backhaul for all your Smart Wi-Fi devices. Repeat by now switching on the other smart wifi device, same test and record result's. Think that you only have 2 devices as you said couple earlier in the post. Once you have your baseline you can look to see what's next. Router is not the easiest to work out, and app is NOT the way to go IMHO. HTH anything i can do let me know.
