Just configured my RT-AC87U to factory FW 3.0.0.4.378.5134 and having lots of wifi connect problems too. Can you provide me a link for your firmware? I have iPhone 5S (6S plus on order), Android tablet, Intel Compute Stick (Win 8.1), Intel NUC (Win 10 Pro) and DELL 7130 tablet running Intel AC WiFi and Win 10 to connect to the AC87U
Thanks
Paul