Also, when the game is paused in Ubuntu, the dialogues and the voices do not seem to stop at some instances.
These are the problems that I've encountered so far.
It works fine, when Vsync is off. But the game needs to be restarted after turning the Vsync off.
I'm playing it on Ubuntu Linux. When I toggled the V-sync, the screen went dark and, only, the dialogues were visible on the screen.
