I received mine yesterday.
I set up my new AC5300, loaded merlins latest 59 alpha2 firmware
-I had a 2.4 hiccup when I first turned on smart connect, so I turned off smart connect, applied manual settings, then turned smart connect back on, been working great so far.
-I had a NVR issue, fixed by-- "NAT Loopback" ,was on Merlin, I switched it to "Asus"
-My tested 2.4GHz is the best of any router I owned to date, I get coverage in my weakest spot of my yard, (this is what I always wanted a router to do, finally, besides the rest below) (router in the same placement as all the rest).
-My 5GHz , no dead spots found yet, wifi to lan device control is great so far in all areas tested.
-No wifi drops seen at all!
-WIFI is switching perfectly/seamlessly so far also, from band to band!! (this is linksys weak spot, would not work at all going from 5 to 2.4 on linksys).
-QOS- I turned on Adaptive QOS, I have no idea if working, I choose Game for it.
-PS4 lag --- none found yet, all my other tests for this (that are meaningless for this router) is testing bad, BUT I see no more lag than my linksys (that was best for no lag).
-I am not seeing UPNP for my PS4 in system log, port forwarding?? I do see it in the connections list though.
All great so far, and seems to be worth the money. This AC5300 is doing what I always wanted a router to do, finally. (I hope I did not write this to soon)
I do take back all my bad comments about Asus Except that POS 87r. I personally think Asus should have given us 87 owners great discounts on this one.
Thanks to all
Thanks to Merlin!!