Update - a short while after posting this I went into the Roku menu to set the auto detect back on (under HDMI in AUDIO in SETTINGS) , because I had taken it off auto-detect while trying to fix the issue, and now the issue has resolved - unless it was a coincidence and something happened elsewhere at the same time -- that has FIXED THE ISSUE.
There is no logic to this fix because we only took it off auto-detect today while trying to fix it. But perhaps taking it off auto and putting it back on is the fix.
So what seems to have worked is going to SETTINGS and then AUDIO and then HDMI and then taking it off AUTO DETECT and then going out of the menu (and maybe turning off the whole thing at the mains and back on again) and then going back in and putting it back onto AUTO DETECT again.
I have a ROKU Premiere Serial # YT0089234728 that has the same problem with audio sync.
This happens when the program goes to a commercial break that has no content just promo stills photos with music. MSNBC seems to be the worst but it does happen on other programs.
I'm also having this problem and it's pretty much across the board. It got worse for me this morning though because now the sound is all glitchy and it doesn't seem to matter what App I use. I even turned it off and back on again and it is still having glitchy sound. I also have a TCL 55" RokuTV
@Photog A few questions here to better understand what you're experiencing:
- Which streaming channels are you experiencing this issue on? (Netflix, Hulu, etc.)
- During playback of any content, press the * key on your remote. A menu will open on the lefthand side of the screen. Do you have any 'Volume mode' enabled here? If so, try turning this off. Does this resolve the issue?
- Are you using an audio/video receiver of any sort in your home setup? Is your device connected directly to the receiver, or to your TV?
- Have you tried changing the option in Settings>Audio>Audio mode as @microtyger suggested? Does this clear the issue up for you?
Keep us posted and we'll continue assisting from there, if needed.