I have a Sonos beam (newest generation) connected to the eARC port on my LG oled tv. The sound is perfect when I play media streaming via WiFi to the beam. When I play tv audio, it’s fine for a few minutes then started sputtering, rapidly cutting in and out to silence. I thought it was the hdmi cable so I replaced it (twice, both with cables that advertised eARC support) but the problem persists. Anyone know how to fix this?