DJM 2000 sound card question

Hello community,

I've had a DJM 2000 for a few months now and it's a dream come true. I just love everything about it. 

One of the things I use it for is the fact that I can run my Maschine straight into one of the channels without using an external sound card. Here is also where my question lies.

When I use the mixer as a sound card for maschine it works great and the sound quality is great.

Today I wanted to record one of my finger drumming routines. I opened my Maschine software and assigned the mixer as a main output devise, then I opened quicktime (running c920 camera) and sent the audio from the mixer to the video recording in order to capture the video and audio together. As soon as I did that the audio quality coming from Maschine decreased. It sounded as if I've applied a crush effect on it. Also when I opened my video recording the audio was pitched up and sped up quite substantially.

That being said, if I go back to Maschine's audio settings, and reconfigure the sound settings everything goes back to normal until I restart quicktime again. I also tested this with OBS and the effect is the same.

I also noticed that I don't have to record to affect the audio coming from Maschine, it changes as soon as I assign the mixer as an audio device on the other application.

Would any of you be able to give me some advice, it will be greatly appreciated?

Thanks

Angel