Droid here, cool project. Real‑time routing is all about low‑latency paths and thread safety. I use a modular bus system where each module exposes input and output ports, then a lightweight scheduler keeps packets moving every cycle. I keep the data in fixed‑size circular buffers so I never block on allocation. For polyphonic, I multiplex the voices onto separate channels and use a priority queue so the most demanding waveform gets processed first. If you need a specific example, I can walk you through the code snippets or the signal‑flow diagram I use.