^ trust me, we already done any kind of mix configuration like changing the regulation and country, channels, wireless standards and stuff, all of them lands on this "beacon" issue. Plus I dont agree with noisy environment issue thingy, because even the crappiest wireless router that I bough on alibaba works much better compared to pfsense paired with best miniPCIe wireless card that I had from ubiquity.
As I mentioned above, all issues that I had is fixed by just moving distro. I point all of this issue with FreeBSD crappy wireless driver, I can assume that wireless drivers in FreeBSD works best on Client mode only, but not AP mode.
Dont get me wrong though, pfsense is still a good firewall disto, but its just not up for job regarding witreless, I actually use pfsense as my main router firewall and a AP AC PRO dedicated AP from Ubiquity (which I should have done in the first place /sigh).