https://bugs.winehq.org/show_bug.cgi?id=37750
--- Comment #3 from Béla Gyebrószki gyebro69@gmail.com --- Still present in 1.7.36, Nvidia binary drivers 340.76
The rendering problem in Assassin's Creed doesn't exist with the latest CSMT patchset.
In comment #1 I could have been wrong, the other games that also have graphical issues due to commit ee8a5b are old, Directx 6/7 games (like Arx Fatalis, Fleet Command or Simon the Sorcerer 3D) whereas AC is using Directx9. Using CSMT doesn't resolve the graphical issues in those old games so that could be a different problem.