Not sure if roaming is actually the fix for this problem. For whatever reason my Ring cameras just love connecting to the worst and most far away AP in my house.
I had to solve a similar issue for some crap IoT lights that would join the incorrect AP after a power cut every time.
> https://community.ui.com/questions/Lock-Client-to-Specific-A...
That can mean that the portable wifi speaker-widget (which itself doesn't need much bandwidth) might go from working fine on the back deck or well-enough about anywhere else in the yard, to not working at all outside.
I need my TV to rapidly switch APs in very heavy load wide area networks with thousands of devices while I'm cruising through the venue with my motorized couch and entertainment system.
Now I want to actually build that for GPN24 next week. Wouldn't use AndroidTV for that though.
With 802.11r on, things would disconnect for 60+ seconds before reconnecting. It was a constant frustration of "arrrrrrrggghhhh fucking connect damnit I'm standing a meter in front of the AP can't you fucking see it fuck fuck fuck just connect, it's right THERE, connect NOW, arghhh" and then it would completely disconnect (no wifi found) and then reconnect a minute later.
With 802.11r off things just roam smoothly. I guess the people who inventned the tech didn't test it thoroughly enough.