the n-band usable, but only used individually in ac-band

I can install these access points, as it with "Featuring Wi-Fi 802.11ac, 3x3 MIMO technology and a sleek industrial design, the UniFi®AP-AC is a Ubiquiti Networks®Access Point (AP), ideal for deployment of high-performance wireless networks. " are touted.

I wanted to build a high-performance AC-Fi.

But in Germany is in the 5 GHz range only channel 36 with HT80 available (for up to 1300 Mbit / s). So all access points must be running on this channel, which leads to mutual interference and lack of throughput.

Individually, they work great - with an Intel 7260 ac and two antennas in laptop I get to 866 Mbit / s data throughput. But the composite of 10 access points does not work more because you would have to switch to other channels.

So great for home - but since you can also a cheaper W724V or ne Fritz box! stand.
For scenarios where you want to use the software controller - in Europe not recommended - in Brazil we must use more channels.