Same here! I just bought Djay on Meta Quest 3S to use it with my DDJ-FLX4, and I was so thrilled by this feature!! Unfortunately, I couldn’t get proper sound out of my MIDI controller — it unreliably outputs only the cue signal, regardless of the position of the faders or the crossfader (everything works fine with my iOS app using the same cable). It’s so disappointing! I understand it’s Meta’s fault, but you should remove this feature if it can’t work properly anymore. I spent hours trying to figure out what was going wrong. 
Hi @Julien_C, welcome to the Community! Sorry to hear you’re experiencing this issue. Our engineering team is still discussing this with Meta and investigating options. I have raised this again with our team and will share more news here when I have it. Thanks!
