WiFi-as-WAN Roaming Speed

Has anyone ever deployed a MAX HD2 in a multi-AP environment (eg. in a large warehouse with 40 APs from vendor X where several MAX HD2’s are mounted on forklift trucks which move about the facility). What kind of roam speeds do you get? Is it the typical wait-until-the-signal-dies-before-scanning method used by most Linux WiFi STAs, or is it true station roaming, maybe with 11r/11k support?

We are using “wait-until-the-signal-dies-before-scanning”, and do not support 11r/11k.