Atheros - can make three or more APs, but only two at a time work

[tzalmaves]

Hello All,

I've tried two Atheros m.2 cards in a mini PC, both with the same chipset - the Qualcomm Atheros QCNFA335 (QCA9565 chipset) and the Dell DW1707 (QCA9565 chipset).  In both cases, pfSense allows me to create multiple APs, but I find that if I create three APs, with all three enabled, only the last two enabled (under interfaces) APs work.

By contrast, I tried a TP-Link PCI-Express card TL-WN781ND (AR9485 chipset), and all three APs work fine.

Any ideas as to how I could get all three APs working at the same time with the QCA9565 chipset?

-TM