Hi and thanks for your quick response.
1. 100% scaling, 3 screens through HDMI connectors (but it's happened also in one screen), resolution: 1920*1080
2. NVIDIA GEFORCE GTX 1660 SUPER
3. Its stays. If I take the Fence and go over it its cleared but make a new shadow somewhere else.
4. When I go into the settings and click for example of one of the preference its clear.

Too bad, I like it 