Hello ,
i have two Hap ac2 . I’d like to connect each other using 802.11ac.
There are two wlan interfaces in hap ac2, one on 5ghz and the other on 2ghz.
If i use only the wlan interface 5ghz with 5Ghz-only-ac i can get only this theoretical speed so i guess it is not using 802.11ac.

If i connect also the second interface (the 2ghz interface), the 5ghz interface has poor theoretical speed and the 2ghz speed has 300mbps theoretical speed .
How can i set the hapac2 to work on 802.11ac without using quick set?
Thank you
Two bands, two independant speeds. I red that by using n/ac on the 5G radio you get better performance. Rates are not fixed and can depend on a lot of sources of interference. You don’t have to use quick setup, it can be configured on the wireless interface settings.
How can i set up both bands to be 802.11ac?
You can’t as there is no ac support on the 2G radio.
https://en.wikipedia.org/wiki/IEEE_802.11
You create “virtual” Wifi interface on one of the hap ac2 (I call slave AP):
- One AP 5GHz (used from local clients to connect to this hap ac2)
- One “client” 5GHz" used to connect to the 2nd AP (who will be the master connecting to internet for instance)
Then you can use 5Ghz for clients and conection to the master AP .
Then instead assigning eth1 as the WAN interface on this “slave AP” you use the virtual Wifi client as the WAN interface.
With this you can use 5Ghz for both usages.
An even better way is to use the “audience” product, which has 3 real Wifi interfaces, one being 4x4 in 5Ghz.
What do you mean by: “so i guess it is not using 802.11ac.” . You get MCS8 speed (GI and SGI case) at -49 and -51 dBm. For MCS9 the signal to noise ratio might need to be somewhat stronger.
http://mcsindex.com/
https://www.wlanpros.com/mcs-index-charts/
For higher speed you need the 80MHz+80MHz (secondary channel) , but then you are using 8 channels already,