White objects on Teltow are an old problem, that's why it's mentioned in the Readme (even in English) with some tips. Since update 1.04 the situation got worse e.g. because activated antisotrope filtering. You are lucky when you only have problems with Teltow, this can easily happen on other maps, too. For some people even in original Spandau.
If you have a 64bit windows, then this can help: http://m-r-software.de/omsi/fo…&postID=254409#post254409 (you need some help of Google translator).