Reply to Recording my DB4 mix

Hi

I posted on the Traktor section with this query a few days ago and had no response so I'm hoping someone can help me out here instead.

In a nutshell I want to record a mix off my DB4. I use a simple set-up 2xCDJ's and my DB4 mixer. I've scouted around on the net looking for the best way to do this and I've only found guides on how to do this using Traktor so I followed the guides and got it set up via a USB cable.
It seems to record fine but during playback the mix crackles a bit and just generally doesn't sound the greatest quality. I've tried tweaking the bit rate and stuff but if I'm being honest I'm not very computer savvy and if I can't find a guide how to do it or fix something I'm generally at a loss. This is also my first experience with Traktor and I feel very lost in the woods. I have a little more experience with Ableton live as I messed around with it for a bit a while back but I don't know how I would record the mix using it and I can't find any guides or posts on how to do this.
My PC isn't the greatest either so there's a lingering thought that it might be a hardware issue.

Any help with fixing this would be greatly appreciated.

Just to be clear I'm not committed to doing the mix in Traktor, if someone can tell me another way of recording it then I'm all ears.