Since installing the latest update on Friday, I'm having the same problem. DXDiag attached. Windows did I pretty big update since I last ran the game so if I had to guess, I'd say that has something to do with it.
Windows version is 10 Home, Version 1803, build 17134.48.
I'm running the DX9 version.
I'm going to try a fresh download of the game and see if that helps.