I believe I have solved the problem by switching from "home" to "MTH" wifi. Today, I started the run session using the home network, and in a short period of time, the iPad lost control of the engines that were both running, ugh. I checked the lights on the wifi unit and all the lights were illuminated, although the wifi light was blinking which I believe is normal. After switching from "home" to "MTH" wifi mode, I had stable operation with no issues.
I believe that my home LAN network switch interrupts service to devices from time to time which may be the source of the issue I was having. I had a similar issue with a SONOS installation and had to hire an IT specialist to fix the LAN instability problem.
Thanks for your comments on this post thread.