Hey everyone , my fist post. I am fascinated by all the knowledge here and have been learning and reading for months and still a newbie. I have an AX86u and am a tweaker. Like everyone else I seem addicted to get as much performance out of my connection. I am wondering why when I do the speed test through the router or on my phone the download test completes but sometimes the upload test will stall out and the router losses connection. I have a fiber connection from my ISP and pay for 300 mbps up and 300 mbps down. Does anyone know why this would happen? Generally the connection is pretty stable and disconnects rarely. I use smart connect with the same SSID , blink cameras on the 2.4 band and 8 to 10 devices on the 5g band. I am currently running Merlin 386 .5 2 firmware and changed only a few of the professional settings based on alot of reading. Thanks for any input!