http://bugs.winehq.org/show_bug.cgi?id=30743
--- Comment #7 from flobob vulture6@mail.com 2012-12-23 08:40:54 CST --- Yes, forcing it to run on a single core boosts performance to almost Windows level. However, interestingly, this only seems to work on Nvidia cards; AMD/ATI performance remains pretty much unchanged.