If you're talking about a general WAN, there's no guarantee that jitter on your route may not violate 12kpps, and it's quite common on most oversubscribed ISPs to stutter receiving 6.144Mbps due to occasional high latency causing a missed packet window (oversimplifying here because there are audio receive buffers as well.) Over a LAN this would only happen if you're pushing your switch to the limit.
Should you buy an audiophile network switch? God no.
But this only matters either if you don't have enough bandwidth to compensate and a buffer, or for whatever reason can't buffer much (e.g. it's live and two-way)
Yeah hence I mention the WAN. Generally some link along your WAN route is oversaturated, on a shitty ISP it's probably the link to your local ISP itself. I presumed audiophile switches would be popular for real-time streaming solutions, but I still don't understand the appeal.
Should you buy an audiophile network switch? God no.