What is happening when I loose core connection

Every now and then my iPad mini looses connection with my Roon core. When it happens I usually need to quit the Roon app on the Ipad and re-start it. I’m trying to figure out what could be the cause ? AFAIK, the wifi connection is only within my household, between my MacPro and Ipad, so it wouldn’t be any weirdness with a temporary Comcast interruption, right ?