Latency has very little to do with bandwidth. It has to do with distance and delays. Honestly I doubt the problem is with the modem. It's probably upstream in their network somewhere. The very first thing you should do is pick a gaming server you use and do a traceroute to it.
Note: While I would love to take credit for his work, I am not associated with Mad Customs!
Originally Posted by senghing27
You can contact BigMatt-MadCustoms in his MCB forum