Battlefield 1942 - constant popping/crackling,
Battlefield 2 - some users report popping/crackling and other issues...
Crysis - had a few minor sound stutters here and there,
Devil May Cry 3: Special Edition - when enabled certain sounds is missing or silent. The game over video sequence is choppy with no sound. Missing music in some sections of the game.
Driver: Parallel Lines - Audio stuttering every now and again, while doing handbrake corners or watching curscenes,
F.E.A.R. Combat - no hardware acceleration,
F.E.A.R./Extraction Point/Perseus Mandate - dialogs and music often disappear, EAX 4.0 is unavailable,
GRID - hardware acceleration is unavailable,
GTA San Andreas - odd audio cutoffs, especially when the vehicles change gears,
GTA Vice City - odd audio cutoffs, especially when the vehicles change gears,
Infernal - BSOD with GX enabled and disabled. I think it's driver problem because right after I bought DX, I think I played Infernal, and everything was fine. But I had older drivers then,
Mass Effect - no music and dialogs,
Oblivion - crash on start up with DS3D enabled,
Splinter Cell: Double Agent - no hardware acceleration,
S.T.A.L.K.E.R. Shadow of Chernobyl - no sound at all with DS3D GX 2.0 enabled,
Test Drive Unlimited - pop sounds while racing online with multiple people,
Tom clancy's Rainbow Six Vegas 2 - dialogs, bullet sounds, character sounds dissapear.
Sound actions activated by player are repeated, cut off and stutter.
It doesn't matter now, I settled for a X-Fi.