Got one of these AC3150 routers on a Black Friday deal and after losing 5GHz on the first and having to do an RMA, the 2nd one was acting up, dropping 5GHz again, so I rebooted it and now is in a constant reboot cycle, I am going to try to reflash it with the latest firmware over USB (I'll have to look up how to do this), is this model a problematic one? I know TP-Link has great reviews and I've had one of their famous AC1750 routers too, but this is growing frustrating when I have to keep getting out a backup router to deal with this... We are a heavy streaming household and run a Plex server over the 5Ghz band through a desktop across the room from it, I just don't get all these issues!