John, I had the same issue with Ultimate Admiral Age of Sail at first and can now play to some degree. I have a MacBook Pro and running Windows 10 with Parallels. At first I couldn't do anything but can now play as long as I'm willing to attempt to start the game multiple times. Once a battle is running, I'm good to go. Transitions between missions are much more touch and go with frequent restarts needed before I can continue. I haven't had similar issues with other games or software running on Windows through Parallels.