Netflix Dolby Atmos problems with new Apple TV 4k

I'm having problems with random audio drops /popping with the new 2021 Apple TV 4k using the Netflix app and HBO Max app with Dolby Atmos shows. I had this with the original tvOS and now with tvOS 15.0. It is connected to a Denon X4400Hx. I tried a bunch of things with no success. Not sure if there is a hardware or software problem. At the beginning of the Matrix when the WB logo is coming up and there were small audio drops; I replicated this twice, but now it's working. Super annoyed and I'm worried about a pop blowing out a tweeter.

Is anyone one else having this problem?