Actually, if you have a look in NutsOS, click on Wireless 5GHz, then advanced settings and you should see Mode 11ACVHT80, this is full speed 802.11ac.
Likewise under Wireless 2.4GHz, again under advanced settings, it should say 11NGHT40, which is full speed 802.11n.
If it says something else, then please select the settings you want from the drop-down menu.
We'll be making improvements to the web UI over time as it has some rough edges like this.