No more problem with audio stuttering here. Maybe it was a cache problem. Now i have problem with graphics freeze, when i watch a video on youtube my screen freeze. I've tried to install thirdsmile GMAX3100FB patched but i have a black screen on boot (i've also overrided EDID). My card is 2a12.
Have you patched it for 2a12 (patched kext above is for 2a02)?