Real-time applications (Zoom, Teams, VoIP) are sensitive to roaming delays. If aggressiveness is too low, the device may wait too long to roam, and by the time the handoff occurs, the signal is too weak to support the call, leading to dropped audio.
Roaming Aggressiveness is a setting—typically found in network adapter drivers or wireless controller software—that dictates how eagerly a client device will abandon its current AP to connect to a new one with a better signal. It is essentially a tuning parameter for the roaming "trigger threshold." roaming aggressiveness c'est quoi