LG 60LA8600 User Manual page 29

To❐synchronize❐audio❐and❐video
❐ ❐
SMART❐ ❐➾❐Settings❐➙❐SOUND❐➙❐AV❐Sync.❐Adjust
Synchronizes video and audio directly when they do not match.
If you set AV Sync. Adjust
or SPDIF) to match the video.
TV Speaker
to ON,
Adjusts the synchronization of the sound from the TV's internal
speakers.
Moving the slider to the left will add a delay to the sound
output. Moving the slider to the right will add a delay to the
video output.
you can adjust the sound output (TV speakers