The Sonos Arc works fine with our C9 OLED TV here and others who have posted and have the C1 TV seem to be sorted too - I suspect in the rare cases where there is an issue, it’s perhaps a third party product connected to the TV that’s attempting to steal away the CEC focus, in which case it can be switched off on the device, or perhaps just use a CEC-Less adapter. Any music dropouts are usually a local network communication issue - 99/100.