I have some issues running CMAK from time to time with Windows 10. Sometimes the screen resolution will not change and it hangs. I have to restart the computer to correct this. If I just minimize the window I don't have this issue if I am PBEM, so as not to have to keep starting the game each time.
Also, sometimes once the game window is open the graphics will be glitchy. Closing the window and reopening it will cure the issue. I read this on another site at one time so it is common. Good luck and enjoy the games.