Either it was a video quality problem, or an audya problem. but when the groove was slowed down, the drums seemed to be hiccupping a bit. Sounded exactly like what time stretching can do if you choose the wrong algorithm or try to push it too far. And I still would have liked to hear what the guitar would have done if a suspended seventh chord or something other than major or minor was used. It sounds great when it's in its element, but stretch it a little and it starts showing its weak spots.