http://bugs.winehq.org/show_bug.cgi?id=12453
--- Comment #75 from Ken Phillis Jr kphillisjr@gmail.com 2010-07-22 13:13:36 --- The patch does remove a lot of the conversion calls, however, the overall frame rate is still very low. With Left 4 Dead I'm seeing 25fps (even with the patch) instead of the expected 50 fps, however I do want to make sure it's noted that most of the sudden frame stutters have stopped especially when a large number of enemies are on screen. However, this could be accounted for by the fact i have most of the settings at max.
System Spec: Athlon II x4 630 Radeon hd 5770 Ubuntu 10.04 (64-bit) 4gb ddr3 memory Catalyst 10.6 drivers