Hi,
I had the same issue 8 Sound interruptions and eArc (Auto) not working. I live in Austria so I have the European firmware. Do you you know if the issue is update ot fixed. Since 4 days my e-arc works with the SONOS Arc and the Samsung Frame 65 (2020). I just made a litte change on my setting. I always had the arc connected via WIFI, and the Frame via LAN cable. Because i had not enough outputs, i bought a switch and connected everything through the switch. So, SONOS Arc an Samsung Frame are connected on the switch via LAN cable. And now it works. eArc is enabled on AUTO and I have since 4 Days no sound interruptions. No idea why :)
I don’t know why it works now, bit it does.
Maybe someone has news.