Hi there - It sounds like the soundbar settings may need to be adjusted. Here are some options.
1. Press Sound Control on the soundbar remote, and then use the Left/Right buttons to adjust until sound is synced.
2. Press Audio Sync on the soundbar remote, and then use the Skip Forward/Backward buttons to adjust until the sound is synced.
3. Press + or - under Audio Sync to adjust until the sound is synced.
You can also see if there are audio settings in the TV that need adjusting.
If you continue to have issues - Please use these tools to help further troubleshoot your issue. 1) Phone: 1-800-SAMSUNG Available 8 AM - 12 AM EST 7 days a week 2) LiveChat or Text: https://www.samsung.com/us/support/contact/ 3) Facebook Messenger: https://www.facebook.com/samsungsupport 4) Twitter: https://twitter.com/SamsungSupport 5) The Samsung TV Community is also a great resource for getting help from Samsung moderators and customers: https://us.community.samsung.com/ ^Cris