When you start a new game connection, it generally takes a few minutes before your latency/ping reading smooths out. This is true with or without Cox Elite Gamer (CEG). Often, right after you get into the game, your ping will read high or really low (often 0ms). Please wait a few minutes and your ping rating should settle to what the true latency really is. You should notice a significant improvement in your ping rating while you run CEG.
The latency reading also only tells you part of the picture. CEG makes your game connection faster (lower average latency), smoother (less ping deviation) and stronger (less packet loss, and fewer hops to your game server). The reporting on your performance screen will give you a sense of the various ways CEG optimizes your connection.