You are concerned about a delay between the picture and sound.
If a Bluetooth audio device is connected
The picture and sound do not match because the sound is delayed due to the properties of Bluetooth. You can adjust the output timing of the picture and sound with the A/V sync setting.
If a specific audio system is connected with an HDMI cable
You can adjust the output timing of the picture and sound. For details about supported models, refer to the support site.