Well, I'm suggesting it would isolate it as a potential problem. So if you determine that disabling the nic in fact fixes the DPC latency and restores it to working as a DAW, then you'd shop for a different network adapter that you could run and disable the onboard, or potentially look for a driver update for the onboard one.
But first step is to isolate anything that is causing those long running DPCs. It may only be in one subsystem. In my particular case, it was the USB subsystem throwing problems, but disabling hyperthreading in my BIOS was the thing that fixed the problem for me.
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"Well feeling (emotion) combined with an artist's discipline is the rarest thing in the world."
-- Ursula Nordstrom
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