https://bugs.winehq.org/show_bug.cgi?id=45121
--- Comment #11 from andy andy86@fastwebnet.it --- I think it's not a duplicate.
In bug 41304 was the process of the game to be using 100% of the cpu, in this bug is steamwebserver.exe and wineserver.exe to be using about 50%-60% of the cpu both summed.