http://bugs.winehq.org/show_bug.cgi?id=36399
--- Comment #3 from Jarkko K jarkko_korpi@hotmail.com --- Well I have 2 suggestions for you.
Which can improve performance.
start game with "WINEDEBUG=-all"
and you can try "stefan's csmt patchset"
can be found here
https://github.com/stefand/wine
I think you should provide more advanced debug log, but I am sorry to say that I don't know what settings should be used.