Reply to Traktor sometimes slows down while playing songs, is it my computer?

I just got my Kontrol S2 a couple weeks ago and have been playing around with it but it's starting to get annoying that at times Traktor slows down when I play a track or downright stops. This happens at random.

I am starting to wonder if it is my PC requirements.

Right now I'm running a HP Pavilion dv4 notebook on Windows 7 with 4 gigs of ram, 64-bit, AMD Turion Dual Core Mobile M520 2.30 Ghz processor.

Are those specifications adequate to run traktor 2.5?

Thanks for any help guys