Campaign map clouds

[Tellos Athenaios]

Well if it isn't the clouds, what is it then?
One time it just runs smoothly the other time it doesn''t :/

Also the rates might drop big time during the spawning of a client ruler somewhere on the campaign map... The amount of script that suddenly starts doing something increases vastly which is a good way of slowing down your PC if the entire script isn't fully loaded into RAM. (But then again, if you do have that much RAM you wouldn't be complaining...)

[bovi]

You may not be aware that the game slows down immensely when you give a move order that cannot be completed in one turn. Simply take a unit from any city, move it out and back in, and the slowness should go away.