If you use Wifi, keep in mind that it's built on a very fragile physical layer. In fact, the MLME expects up to seven failed transmissions before calling a pack

If you use Wifi, keep in mind that it's built on a very fragile physical layer. In fact, the MLME expects up to seven failed transmissions before calling a packet dropped (otherwise it would destroy TCP's performance due to TCP's default congestion control mechanisms). The delays each way from two people speaking over noisy Wifi networks can already add substantial lag.