An important point: In Wi-Fi, only one device at a time—whether a peripheral or a network component—communicates with the router at any given moment. All other devices must wait until the medium is free. This is why when there are many Wi-Fi clients on a single network, latency can increase significantly and affect communication types like voice and video on Teams or Zoom.
A tip: Reducing the Wi-Fi radio power helps shrink the broadcast domain, which in turn reduces interference. Also, applying Quality of Service (QoS) settings prioritizes communications that cannot tolerate delays.
Configuring your wireless router on the 2.4 GHz frequency using channels 1, 6, and 11 is much more effective than selecting adjacent channels like 2, 5, or 10. The Wi-Fi protocol recognizes Wi-Fi communication only on the same channel, while adjacent channels are interpreted as noise. Consequently, this causes multiple retries, which slows down every Wi-Fi device on the network.