Speed-hack detection and performance of the server.

Speed-hack Detection causes a specific amount of traffic between client and server, and traffic increases in proportion to the number of clients connected to the server. In case of just client connection to the server PC with 4 GB of Xeon E312XX (Sandy Bridge) memory.
If not using Speed-hack Detection, 0~3% of CPU usage is measured.
If using Speed-hack Detection, 25~35% of CPU usage is measured.

Therefore, it is recommended to deactivate Speed-hack detection unless it is absolutely necessary. (Use of Proud.CNetServer.EnableSpeedHackDetector)