Recently i upgraded to a macbook pro (15in early 2011 base model) and i installed Traktor 2.1.1 onto it alright. Ever since, in traktor the waveform lags and glitches as it moves across the screen for about 30 sec then it will go smooth again and if i use hot cues and scratch (I HAVE A TRAKTOR S4) it will provoke it to lag and glitch again. Also, traktor uses about 40% - 50% of my Macbook's Cpu weather its on multicore mode or not. I am very disappointed as i thought getting the macbook pro would make all my problems go away but its quite the opposite. Does anyone else suffer from the same problem, or similar? Help would be much appreciated, because i find it hard to watch as is lags across the screen and watch as my cpu suffers on a MACBOOK :S... It makes me want to use my windows laptop which worked fine even with the new update. Thank you!