Xbox out of sync with sound bar in Netflix and using DVD

I recently purchased an LG sound bar 4.1. I hooked it up like this:

1. HDMI from xbox one to TV

2. Optic from soundbar to TV

When I am watching tv over digital antenna the sound is in sync with video. It also seems to work well when I am playing a game or watching a blu ray. Yet when I watch something on netflix or watch a dvd the sync is WAY off. I have looked at other threads
with solutions and I can't seem to find anything that will fix this issue. Is anyone else still having this problem?

Is the issue with this type of sound bar? This is very frustrating!

:)

 

No sound on DVD

I use the optical out to connect to a sound system. When playing games, on Netflix, and when using the Xbox system, sound plays flawlessly. However, when I popped in a new DVD (After Earth) from Redbox, a funny thing happens: the screen flashes, like there's
a disconnect between the TV and the Xbox (HDMI), which quickly restores itself; the speaker system no longer plays sound, though the TV plays sound through the HDMI.

Any suggestions? Is there a copy-protection problem or something with the DVD?

As evidenced by the functioning of the sound through the TV, and the functioning of sound through the optical with games and Netflix, there are no problems with my cables.

To summarise: optical cable to speaker system; HDMI for picture; Xbox system sound set to Dolby Stereo.

 

I am having problems with xbox 360 S HDCP Link not found?

I have my xbox 360 slim hooked up with Hdmi for my video and my audio coming out of the original composite cable that came with the xbox 360 running to my sound bar. It works great for games and also works great for Netflix also, but when ever I try to watch
a Dvd disc or Xbox video I get this message that the Hdcp link is not found how can I fix this so that I can watch Dvd disc and xbox video without get Hdcp Link not found?