I was trying to play back ups of Guitar Hero: World Tour, and Sonic Unleashed. I am using Swap Disc v3.8, I burned the ISO's to discs at 2x using Alcohol 120% and TDK DVD-R discs 1x - 16x. My PS2 is a slim 70000. I'm getting choppy cutscenes on both games and in Guitar Hero the music freezes up a lot and repeats the same few notes while visually the notes keep coming. I just got this PS2 used from Gamestop, and I'm worried that the laser is going bad... I read in a forum once that when the laser starts dying, the recorded DVDs stop first. Could it be that I might just have to do a TOC refresh, or would that not effect this situation? Any help would be greatly appreciated.