I recently downloaded OBS Studio, and tested it using my webcam and audio from my Steren analog board. I have a mic plugged into channel 1. I then take the audio out from the board into my PreSonus AudioBox USB 96. If I only have the mic running, then the audio records perfectly. But as soon as I try to add additional channels (in this case, two channels of bass), the audio gets choppy and distorted. I have set the levels to where there does not seem to be any clipping, but the problem persists. Any idea what is going on?