Faster Ping optimizes network registry settings in order to turn off ACK delays and small packet delays. Windows intentionally delays small packets and waits until more data can be sent, which is a good idea for non-realtime applications. But in Multiplayer and MMO games the focus is on sending all packets (like move_left, cast_spell, ...) immediately to the server, even if they are only 1 byte in size. Faster Ping turns off these network delays which improves latency and ping times significantly.