Mac play Choppy while on boat.

[bigben]

Ever since the emergency upgrade the other evening I have been pretty much unable to play the game if I go out to sea. The game play gets so choppy that while at see the scene starts then stops over and over. I can drive from island to island, but the moment I engage an enemy the game play is horrible. I have tried three different Intel based macs running 10.5. I have reinstalled the Prirates program. I have tried on two different networks. My wife also has the same issue on her macbook. I am getting frustrated to the point that the game play is unbearable. Anyone have any suggestions? I have submitted a support ticket and have not heard back from anyone.
Thank you,
Ben