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Very nice. Hadn't seen such a clear explanation of PDV and the solution with synthetic delay before. I've designed several latency critical protocols using these techniques and some that build on this, but haven't before seen such a clear explanation. My own "slides" were harder to follow, when I had to explain once how the protocol works.

Could have saved me months of thought 10 years ago if one had existed. ;)

It's always validating to see someone else arrive at similar conclusions when facing a challenging technical problem. To the author, I encourage you to keep pushing (if you want to), it's possible to replace the fixed synthetic delay with a control loop. :D This makes both the PDV _and_ the system latency approach their minima over time.



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