Z3D does seem to be glitching out at times (this is probably the “glitchy depth layers” that someone referred to earlier). The way I can describe it is that the entire screen gets covered with blur (like the outlines you normally see around objects in Z3D mode) and the 3d depth effect disappears. Didn’t run into this issue until I got into the first firefight in “The Rescue” mission for street thug start, but its happening there consistently. I think its related to the lighting in one of the rooms…
Thanks for the quick profile, the z3d implementation looks pretty good for this game in immersive screen. G3D would be nice, but it would probably be impossible to play at a non-blurry resolution with current GPUs anyway.