I've never actually gotten { echoCancellation: true } to work for me, but your sibling comment does have a suggestion I need to try out! Echo cancellation is a

I've never actually gotten { echoCancellation: true } to work for me, but your sibling comment does have a suggestion I need to try out! Echo cancellation is a pretty lightweight DSP/FIR task. Whether you do it close to the hardware (? I suspect this is not actually the case with getUserMedia though -- it is still an audio stream algorithm) or in the application layer, echo cancellation requires the same amount of added latency. But in any case, I did say I suspected echo cancellation would shift to getUserMedia. It's not fully there yet, but it will be.