With my example for login, my assumption was that one would use short-lived TCP connections (i.e. server receives login packet, sends success/fail and finally c

With my example for login, my assumption was that one would use short-lived TCP connections (i.e. server receives login packet, sends success/fail and finally closes the connection), not a simultaneous, persistent connection where TCP congestion (and thus UDP packet loss) becomes an issue. But maybe I'm wrong on this one. Thanks for sharing by the way, great article (although as an aside, some of those graphs are really hard to read).