Rugger,
A couple of things to look at. If you want a server that looks decent from an East or West coast perspective I would look at some of the hosting companies in Texas. Have some of the East and West coast players get some trace routes to their sample servers. Usually there are decent paths to most isps from that area. Cutting down on the amount of airstrikes also could improve your ci's as well. For people that don't know most of your virus scans that do real time scanning pick up on that and attempt to scan it. The numerous airstrikes also do no favors for the dedicated server to calculate as well. If the mod your using ran decent in the past its not your mod causing the issue. Unless the mod version changed and the netcode in the newer version has changed as well. As far as the current mod if I wanted something similar to the newer cod games I would play that. Not a cod2 version with 9 year old graphics. My personal favorite is the mod playing ctf. That server was fantastic and like crack back at its peak.
One sample company. tracert to the texas locations
http://webehostin.com/games.php