3m2oo5: I got temporary quick fix from the developer.
1. Launch the game normally.
2. Go to settings and scroll down untill you find advanced graphics tab
3. Change the first option, renderer type (i got polish version, names could be different) to DX9
4. Voila, it works.
also if that does not help you, they gave me more possible fixes.
"Hello,
Thank you for contacting the technical support of Focus Home Interactive.
This issue is under investigation by Eugen Systems and NVIDIA.
Please run Wargame RD in DirectX 9 mode instead in DirectX 11.
Otherwise, please run Wargame EE in Windowed fullscreen mode:
1. Open 'Windows Explorer' or 'File Explorer' from the taskbar.
2. Click 'Local Disk (C:)' under 'Computer' or 'This PC'.
3. Open the folder 'Users' then your Windows username.
4. Open the folder 'Saved Games' then the folder 'EugenSystems'.
5. Open the folder 'Wargame1'.
6. Right click on the file 'Options' (Options.ini) and click on 'Edit'.
7. Set WindowFormStyle under [video] to 1:
WindowFormStyle = 1
8. Save the file and run the game.
We apologize for the inconvenience.
Regards."
Thanks works now.