"I have been using my GT-AC5300 as a hone router for two years. Great product. Then I wanted some tech fun, so I spun up a pfsense router and turned the AC5300 into AP only. Worked great for one month. Then I picked up an AC68U amd added it to the aimesh as an AP node upstairs to improve coverage . Linked through Ethernet. Worked great for a week."I mean everyone else is trying to explain this but I guess I'll try too.
You are correct that you cannot build an AiMesh with another brand of ROUTER. The OP is not doing that.
They are using their own PFSENSE router, standalone. Then SEPARATELY they have two asus devices running in AIMESH AP MODE.
A fully supported version of Aimesh, and it is not "fake".
A mesh system is first and foremost a wifi AP system only. The fact that the "main" node CAN act as a router is above and beyond that. It is not REQUIRED to.
Even if you consider all 3 devices to be "ROUTERS" they are still not attempting to join their PFSENSE to the AIMESH. Only two of the devices are being put into AIMESH and they are both ASUS.
pfsense: Main.
AC5300: Node.
AC68U: Node.