[SteveGarward]

Thanks Al for all the ideas.

We were having large, intermittent latency issues even when it was plugged into mains power.

When we changed the wireless channel (to try to avoid any possible interference from other wireless around, since we're on the electronics engineering level of a university, with wifi in the room as well), the latency issues went away. We went from ping requests getting up to 2s or timing out, to 1ms response time, 15ms at most, consistently over a 3 minute period.

So for now we're assuming there was enough happening on the channel it was picking (in auto mode) that it was causing us some issues. Time will tell if this has permanently solved out problem.