That’s what I do. My internet comes into the house on the main floor. My system is in the basement. I use an ASUS wireless router to send the signal to the basement.
Something’s amiss. I meant run an Ethernet cable from a Wi-Fi extender or Mesh node to the Gustard in your listening room, not use Wi-Fi. Is that what you’re doing, because it didn’t sound like it from your initial post?

