To synchronize audio and video
HOMEHOME Settings Sound AV Sync Adjustment
Synchronizes video and audio directly when they do not match.
If you set AV Sync Adjustment to On, you can adjust the sound output (TV speakers or External Speaker) to the screen image.
If you select the Bypass, Outputs the broadcast signals or the sound from external devices without any audio delay. The audio may be output before the video because of the time the TV takes to process the video input.