Hello. Sorry I have not responded. For some reason I did not receive notification. Thank you for the lively conversation. I have two ASUS routers in aimesh/ap mode. When I restart the routers, everything appears to work great! More clients on the main GT-AC5300 as that is on the main floor, and a few clients upstairs on the RT-AC68U. Benchmarking each channel is fantastic. I've never had better wifi. However, within a day problems arrise. Devices report being connected to WiFi, but have no access to the Internet. Simple things like Google Mini's can't respond to "What's the weather", etc. Reboot the router (Now just an AP) or even open and "apply" the wifi settings with no changes and they work!
The way I read the FAQ from Asus, they support two or more routers only in AP mode in Aimesh. I just turned down the value in Roaming assistant, hoping that is the culprit. Sorry to kick off a debate, just looking for ideas on how to keep this stable. It starts awesome, but something is happening that makes it become unstable. Thanks for any tips.