Ive downloaded and tested the Pong demo!

I had to add a line to the "acknex.h" in the folder, your version was probably based on an old .h file, but after replacing it it worked like a charm! I have also added your default.c for comparing the traffic, this did not look so good. The original Pong multiplayer demo from Gamestudio has a traffic of around 88 bps, yours had 3400 bps. Maybe there is some optimization in Gamestudio thats missing in anet?