Set up;
Sony TV, Virgin V6, Firestick, Playbase
Audio for the TV and V6 Box connect to the Playbase via a Lindy optical connector with no lip sync' issues. Pay movies through the Virgin box, no lip sync’ issues.
The Firestick is plugged in to the TV, Firestick audio output through the TV speakers is OK, dire through the Playbase.
Any ideas as to a fix - Thanks