"low-delay", "WebRTC" ... choose one.
I really don't get why everything needs to be in a web browser nowadays. WebRTC is simply the wrong choice for low-delay audio streaming. Audinate's DANTE protocol has been around for 14 years, is affordable, hardware-accelerated, and has practically no avoidable latency when sending audio over the network.
Why add 20+ms of latency just to use WebRTC?