I've been using only Sony16d1, which is accucore Sony DVD-R 16x. I burn using IMGBURN at half the speed 8x, the maximum it'll go (even tried burning at 16x once but Imgburn only takes it up to 8x). Mostly 50% of the game run absolutely fine, while the other half show stuttering and hanging in FMV scenes, long loading times. I bought my ps2 premodded. Its a NTSC/J 70006 slimline Ps2. Its modded with some Matrix Infinity chip. All the Ps1 games run fine and smooth, btw. Also, I'd like to add I lately bought an original copy of Gran Turismo 4 (PAL version) and it too stutters a little bit at the opening FMV intro. What is wrong? Thanks for any help.