https://bugs.winehq.org/show_bug.cgi?id=39252
--- Comment #4 from Bruno Jesus 00cpxxx@gmail.com --- (In reply to groovy354 from comment #3)
I managed to find a different version of the game and running it causes CPU usage to rise up and remain at about 80%
That would be a different problem. The first game source you used could be from a damaged/bad version of the game.