Mu-So 2 "clips" sound from Samsung through HDMI ARC

My Mu-So 2 is connected to Samsung 55 "Q95T 4K UHD QLED Smart TV QE55Q95TAT (2020) via the HDMI ARC input. I experience that the sound is “clipped” - disappears in 2-3 seconds, then on for 2-3 seconds, and so it goes. After full restarting of Mu-So and TV, it normally works again, but then the error normally (not always) returns again after the system has been switched off (to stand-by).

Any idea what I can do to fix this?

Is the firmware up to date on your Samsung and on the Mu-So?