Sorry, but I can't believe that this is about timing. I don't see how the data packets, which are buffered, can impact DAC timing*.

I'm not saying that it's impossible that there is another cause.


* I am convinced by the science behind data-based jittering, but assuming an accurate data stream (which ethernet assures under relevant circumstances), no switch or router would be changing the data as it arrives at the interface, other than the most minor header info, so that can't be a cause here either.

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