PingCraft LagKiller

LagKiller is a lightweight desktop app that runs in the background while you play World of Warcraft or other TCP based games.

The app picks the fastest route from your computer to the game server using PingCraft's advanced global server network, and packages your data like a high speed bullet train for blazingly fast results. The software/service is available for a tiny monthly subscription, and is well worth the price for the performance gains.