From the original post, the problem symptom suspected is that the incoming ISP 3Gbps GPON connection is insufficient to support 40 AP's and uncounted client devices over the expanse of buildings....

@Salaver turn on all Omada roaming features, including k/v with a preference for 5 GHz. Do NOT turn on 802.11r as that doesn't apply for a typical home network and will create issues for you. I have...

After a couple weeks monitoring the situation, roaming works a lot better with 802.11r DISABLED. Since the site is not 802.11x, seems that turning on 802.11r causes problems as noted above in this...

@Fae, you are right, to a point. I would think that we can design and provide for sufficient 5 GHz signals indoors, but there will always be transit areas that people find where they roam to 2.4 GHz....

From what I'm understanding, for a typical residential (not business... not 802.11x) scenario, only k and v are used for fast roaming. And of these, "v" provides or directs a best candidate...

@Fae Been using software like WiFiMan, which does a great job showing the User Equipment (UE) moving (roaming) to new AP's. However, it would be very helpful to see WiFi management packets to confirm...