by Sandman25 » Sun Nov 29, 2015 3:49 am
I am not sure now but as far as I remember it always started in full-screen, and now too. Maybe the problem is not in Windows 10 but in my system, as it turned out my video driver wasn't updated by Windows 10. I have just updated it manually though it didn't solve the issue with resolution in another game.
Edit. Yes, F11 works for me, thank you!