For some reason, my Samsung Galaxy Note 10+ is continually directed towards the 2.4ghz band of my network. It doesn't matter if I'm standing directly under one of my AP's. It's maddening. I'm running the latest (just released) version of Unleashed on 2 - R510's (one in the center of each floor). If I restart my device it will connect back to the 5ghz band for a time (usually 30 mins). My guess is that as I walk around my house (or outside) it switches to 2.4ghz but is unable to go back to 5ghz for some bizarre reason.