possible mDNS issue causing wifi crash?

FURRYe38 --

Thanks for reply.

As initially stated, C7500 2.4GHz radio is manually set to least congested non-overlapping channel (e.g., channel 1, 6, or 11) as determined by periodic monitoring using external third-party wifi diagnostic tool.

Typically neighboring wifi signals on set channel number less than dozen with only handful of strongest signals with average signal strength never higher than low 40s (on scale of 1-99) -- note happened to have one failure recurrence occur during working hours and had C7500 rebooted shortly thereafter with no wifi issues following reboot, and left another failure recurrence untouched for several days as wifi congestion drops off in middle of the night but to no avail, so doubt issue has anything to do with outside interference.