After the latest patch all windmills have weird giant black polygons instead of rotating fans. Can this be fixed manually by doing anything with my installation?

Hey I have the same Problem. And the blood and wine dlc just came out. The game has black boxes and black polygons at some points. (e.g. the windmills and some fountains) Can you fix this gog?

Forgot to say that

-I have the latest update (Date is 02 June 2016)
- my Graphicscard driver is up to date
- as well as my Windows 7
- I turned my firewall to gamemode and all other virusprog. off
- I tried to set the graphics on low, fullscreen windows etc. shadows low etc.

- I am running on Windows 7 Ultimate (Version 6.1.7601 Service Pack 1 Build 7601) x64
- Intel Core i7- 3770K CPU @ 3.50GHz
- 16GB DDR3 RAM
- AMD Radeon HD 6900 Series