I purchased this router this week, been up and running for a few days now and all is good except 2.4 ghz wifi. it will keep popping up and disappearing in the list of available networks, mostly not in the list at all though. 5ghz is working perfect. When you do get 2.4 up and connected the connection is not consistent. Webpages will time out or not load but then things work nice and fast for a second and then dead again. I have used wifi analyzer on my phone and there is no other network...
Asus RT-AC88U wifi problems
Asus RT-AC88U wifi problems