Max 4 Live instance causes intel mac (2018) to loose contact to MOTU soundcard

So I made this polyphonnic granulator in Max 4 Live, but when I add it to an Ableton session, my audio interface (MOTU UltraLite) gets confused and there is a lot of lag in the sound with dropouts and high pitched digital sounds as well.

Any thoughts?

I also get the error: "#2: requires additional argument" in the max console. But I can't find a #2 anywhere in the patch.