Game works perfectly 99.9% of the time, but occasionally my keyboard stops working and the last key I was pressing remains permanently active. Most of the time this is the W key, since it is the key to move forward. Once this problem occurs, it cannot be fixed even if I unplug and plug the keyboard back in. Oddly, the mouse continues to work fine despite being connected via the keyboard. I should add that the keyboard is attached through a USB hub connected to a Thunderbolt adapter (Apple brand). The only way out of the problem that I've found so far is to press CMD+OPT+ESC and force-quit Parallels, proving that the keyboard is still working on the Mac side but breaks only within the Parallels guest OS. In short, Apple key commands continue to work but Windows key commands don't. Seems like a Windows problem losing connection with the keyboard that is unrecoverable.