I haven't had any problems with freezing or slow turns, but have started getting an error message with every new system.
Error in GetSystem Theme Name
Error 3077 was generated by DAO.Recordset
Syntax error(missing operator) in expression
I started a campaign with the Terran Federation Theme and had no problems till about the 8th system I entered. I got the above message, but the game continued and it provided the system with a new name from the theme. I have continued to get the same message with every new system and have explored about 20 since. It doesn't seem to affect the game at all, so not a bad thing, just kinda strange.
Mark