My friend has Traktor Scratch Pro on a 14" Toshiba laptop that is like 6 years old with just 512MB RAM, T2050 Intel processor 1.6GHz and everything is working good. When I connect my DJC4 to his laptop all is good and no waveform sutter and I can mix with out any hiccups. I installed the same version of Traktor on my recent laptop (2-3 years old) which is a 13.3" Toshiba, Intel Core 2 Duo Processor T5550 2GB RAM, but noticing the occasional waveform stutter every like 15-20 seconds for like a quick second. It does not affect the audio output, but it is frustrating indeed. Now my question is how come it works fine on my friend's laptop which is no much older and under powered, but on my newer laptop I get the waveform stutter happening. My laptop has the bare basics on it since I did a fresh install of Windows XP Pro operating system and just TP software on there. His laptop has Windows XP Media Center version. Anyone know how I can fix the stuttering problem with my laptop? The CPU usage is very low so I don't know why the waveform is doing the stuttering.