Sure will. Thank you @Bucking_Horn.
Interesting you mention about query volumes. I will say that I have two PiHole installations. Both have suffered from the same issues as I have described here. I'll also mention that there are Wyzecams on both networks that reply on these PiHoles. On both networks these little ChiCom-manufactured devices have been observed to launch >800 DNS inquiries per hour. Indeed, I submitted two support tickets to Wyze but the behavior continues and Wyze has been unresponsive to the well-documented issue.
I'll also say that this behavior was discovered because of the PiHole's nice GUI -- otherwise we would not know about this aberrant behavior of these little DDoS boxes.
Just wondering if this issue could be related to the "NAN" issue I previously reported here. Again -- thank you very much for your help.