How to make high-quality WIFI?

Question

Computer networks

Hi all!
I was tormented by the eternal problem of complaints about slow and falling off WIFI with a large number of connections to the AP.
Please advise good WIFI routers / ap points for use in a corporate environment.
There were ASUS RT-N16, then Zyxel Kinnetic Giga II, the latter, contrary to all expectations, are even more stupid when there is an influx of customers.

Answer 1

geektimes.ru/post/217721