Note that 802.11r is only useful if you’re using WPA enterprise authentication (certificates and radius and all). Most home networks use WPA personal pre shared keys (aka here’s my Wi-Fi password).

802.11r accelerates the multi step handshake that you have to perform with WPA enterprise when you roam from one access point to another. There is a much shorter handshake for WPA personal so there is no advantage to enabling 802.11r if you’re not using Enterprise auth.