And what do you use for a source? A dedicated cable service?You're absolutely right, we all need Wifi to use a control point such as iPad or android tablet for remote or headless playback. What others tried to convey here, to my understanding, is to separate the Wifi functionality from your audio handling router. Let some other device such as another Wifi capable router or an Access Point do that exact task: Access Point. That's what they mean by suggesting you turn off Wifi on your router.
Here's what I'd do, to put it in a simplistic way: connect a non Wifi router to custom switch. If cable lenghth is an issue, consider FMCs. Also to the switch I'd connect a Wifi access point. The custom switch will "buffer" your router from Wifi, I'd get better SQ that way.
Similarly, I've got better SQ when replacing ISP supplied all in one cable modem/wifi router with a pure modem such as SB8200, connecting its output to a pure router, connecting the router to a custom switch, etc. You get the picture.