i have found issues with the traktor s8 for online djing the controller doesnt seem to be stable enough and i run into problems.
I’ll just assume that you’ve done all firmware/driver updates on both controller and PC already.
You need to solve this problem first. I see two sources of problems in your statement. The first and most obvious one is bus related. Are you running Intel or AMD? AMD, while cheap and fast, has a horrible bus architecture that causes a plethora of I/O problems on USB/whatever.
Secondly, it could be related to the way you stream your audio online. You need to elaborate on this before I can provide further details. If you are outputting the sound from the controller via USB to your PC – rather than going through a mixer/soundcard – you could be looking at the first cause stated above.