Sometimes poor registry is in the mind, and sometimes it is a result of settings and latency combinations in the game.
One thing that is important is that you have your rates set appropriately. We discuss how to do that here:
http://rentalforums.nuclearfallout.net/ ... php?t=2028. If you are accustomed to accelerated servers and need to play a match on a non-accelerated server, you will need to adjust your rates.
For serious/competitive play, we highly recommend our ping accelerator. We answer some common ping acceleration questions here:
http://rentalforums.nuclearfallout.net/ ... php?t=2407