http://bugs.winehq.org/show_bug.cgi?id=6821
--- Comment #9 from Michael akihana@gmail.com 2008-12-02 22:22:02 --- It seems that this problem has disappeared at least as of Wine-1.1.9. However, I filed this bug almost exactly 3 years ago and I no longer have the same computer. HL2:EP1 is unbearably slow on a 2.4GHz Opteron with a Radeon HD 3870 -- somewhere in the neighborhood of 0.5 fps -- but the rendering problems are gone.