Well i got up to 246bc as the sweboz and was happy to report no bugs so far until one turn it goes to 14ad for absolutely no reason and my computer runs at 4fps (normally runs at least 40) I tested this with the save game. As soon as i load its 14 ad and as soon as i activate script it goes really laggy again.
http://www.filefactory.com/?70248a there is a link to my save if anyone can diognose it.