I am about to throw this 4 month old router in the trash. I started with and have updated the Merlin firmware on it multiple times always hoping the latest version (currently 386.3_2) will fix my frequent disconnects, drops, internet connectivity and sluggishness. Firmware upgrade have come with both a full reset and reconfig or an in place upgrade with all settings retained. No difference in stability issues. I have the 2.4 and 5ghz set up as separates with up to 20 clients max and also have a guest network for my 10 IoT devices as I am playing with Home Assistant. No QoS is set up and my Cox connection is 500Mbs and often tests higher download speeds. 2 FireTV sticks both setup on the 5Ghz often drop or show network is disconnected or no internet access. one is 30ft away from the router the other upstair at 40-50ft. I have a wireless APEX aquarium controller that also disconnects on the 2.4Ghz network almost daily and this is after scheduling a daily reboot of the router. To fix that I disable and then enable the Yazfi guest network. Sluggishness occurs and then the network drops and then it comes back slowly for no reason at all. Yazfi is setup for the guest network to allow a separate DCHP configuration as I see no point in having a guest network with the same IP as the main that I am protecting. That kind of the 1st security step for isolation and have no idea how Asus decided that guest network config is no required. I come from a DDWRT and OpenWRT background so I am used to being able to fully control all settings but this router has me in fits. The house is 2600 sq. ft. and even outside in the backyard I am -45db so I do not have a poor signal anywhere on my property. CPU and RAM are not running peak. Sorry for the long Rant but before I move to some lame dumbed down, phone apped, mesh or router solution I am hoping someone can give a ray of hope or let me know the AT-RX3000 was always going to be crap I just did not read the fine print. I went Asus because of the Merlin firmware option and the ability to not be limited on configuration.