PC Ue4 Crashes If There Are Much Passengers Generated

It looks like the games crashes if there are a lot or some special passengers are generated.
First i thought it happens only on the new Dresden Route. But it also happens on the Boston Route, the problem seems to be since the last update, because it happens also on timetables i already earned a medal for .

The Video ends, if the game crashes:

 

looks like there was an download error in the latest update. After checking the files with steam, it looks like the game works correctly