@SimGuruConnicus: I have found something that's probably interesting for the bug team.
- As I said I started a new Sunset Valley and had that lag type 2 immediately.
- Then I uninstalled everything and reinstalled.
- I started another new game also in Sunset Valley with Gobias. This time all is well.
- I went back to the main menu without saving, loaded the corrupt Sunset Valley game from before and the lag was there again.
Now it comes:
- Went back to the main menu without saving and loaded the new save which was okay before but now it had the same lag.
- Shut down the game and started again.
- Loaded the save which was good before and it's okay again.
So it seems that something crashes (or deadlock?) in the running game code and kind of transports the corruption into another save.
I repost the link to the corrupt save. Maybe that helps your team to find the bug faster.
http://www.mediafire.com/download/hk34s425lgdxkjx/LagTest.sims3.rar