I have over 10 home hubs between Apple TV’s and HomePods.
This is the only device that gives me this much trouble, WiFi is dual band but it’s still the same VLAN/subnet so that argument doesn’t count.
Occasionally I have other WiFi devices not respond but it’s rare and a simple reboot clears it up but not with the Rachio, it never works longer than 5 minutes after a factory reset