I just want the lags to disappear. 

Yes, I do have two HDMI options in the Stage, and the first HDMI input is called HDMI TV and the other one is calling TV in.

I have the HDMI TV from the stage into the TV in HDMI 2 which is ARC.

Yeah okay, just wanted to know if it made any difference connecting ATV to Stage and then into the TV

Have you try to connect apple tv directly to HDMI A on the stage instead, make thats any different?

But it also strange it drop out of sound in the apps on the TV also. 

Of course you have reset your stage to factory would i think, and the tv :) But if not try that also. 

If nothing of this work, i would recommend you to send log fil to B&O true the B&O app, and explain your setup and what you have trie, and the drop out is not in music source, only with video source true the LG tv and HDMI source. So B&O can analyse it. give them also information of time and date and source its drop out before you send the logfil. Time and date is important they can go directly into the log at the specific time you have the drop out, and see what it can be. :) 

Good to know there is someone having same issue as me. I am having same issue as you mentioned. Audio cuts out for 1 second or so and then resumes but video keeps playing. No issue with cable and I have the stage connect via HDMI ARC to samsung Qled 2019 model TV. I have Apple TV 4K connected to Stage directly and issue happens randomly. I emailed support but might take a lot of back and forth. Also I checked critical logs of Stage but did not find anything logged there either.

agp2572 wrote:

Good to know there is someone having same issue as me. I am having same issue as you mentioned. Audio cuts out for 1 second or so and then resumes but video keeps playing. 

I've occasionally had this issue with the Stage. Not sure I'd describe it as a full second though. More like a millisecond cut-out and then continues to play as normal for a few minutes. It's like it has to reset the audio.

agp2572. Your issue might be in one of the HDMI cables. If you’ve eliminated that as the source, you can try connecting the Apple TV to the Samsung and the Samsung audio out to the Stage. IF you don’t get the dropouts then something in the HDMI Arc implementation between the Apple TV and Stage is the issue. I am currently using my Stage as a music speaker only. However, I did have it hooked up to my Sony OLED initially and luckily worked with no issues.

Anyway, HomePods in stereo mode for surrounds can sound pretty impressive because of their ability to calibrate the audio for the room and listener.  

After installing my Beosound Stage in the full setup with a LG C9 55 a few weeks ago I also experienced audio troubles via HDMI ARC. It turned out I used a mediocre HDMI cable I had lying around already. When I swapped it for the HDMI supplied with the Stage everything worked perfect.

After reading alot on this topic I now know that HDMI arc and eARC often cause people trouble no matter what brand of gear their are trying to connect. Most often the HDMI cable is to blame and unfortunately several people report finally finding an HDMI cable working and then after a year or so it starts making quirks again. Maybe due to the terminals oxidizing or what have you.

People report buying cheap cables from Amazon and they sometimes work. Others buy the Apple TV recommended Belkin cable and it sometimes work.

I am very happy with my Stage now that I finally managed to connect it according to B&O recommendations.