Streaming Audio Repeatedly Cuts Out Briefly - Need Troubleshooting Advice

Hello. I have a Marantz Cinema 70s receiver with the following devices connected to it...a Bluesound Node streamer, 3 Outlaw 200W monoblock amplifiers that I use to power my LCR speakers, an AppleTV, a PS5 and a Blu-ray player. Until recently everything seemed to work well, however for the past couple months whenever I stream music using my phone, the audio most of the time, but not always, will cut out for a couple seconds every 20-30 seconds. I've tried with Spotify, Apple Music and Tidal going through the Bluesound Node. I've also tried streaming directly from my phone (iPhone 15 Pro) to the receiver, cutting the Bluesound out of the loop and it continues to happen. In case it was related to the phone, I tried with my wife's phone (iPhone 14 Pro) and experience the same problem. I experience no issues with the Apple TV, with the PS5 or playing Blu-rays. I have not had an opportunity to try with an Android device yet to see if it's an iOS issue. I can say though that my phone streams fine to Bluetooth headphone and via either Bluetooth or wired Carplay in our cars. I'm puzzled, because if it was related to the Bluesound Node, I wouldn't expect an issue streaming directly to the receiver. On the other hand I wouldn't think it would be a network/streaming issue since the Bluesound has Spotify Connect and the music would not be coming from my phone as such. Sorry for the long message but looking for ideas on where else I can look to troubleshoot this. Thanks.