Lip sync issues

In the last week or two I have noticed significant lip sync issues. It is generally corrected by getting out of the app and coming back in. This has started happing quite often.

This is occurring on the new 4K Stick
Thanks
David

Hi
See the same, mostly on Premium channels, not on OTA. Recordings are a bit better. ESPN was noticeable today and continued even with an exit of the APP.
Found the the HDHR app worked with no delay in the audio