I haven't heard of "popping" issues with audio in quite a while, however, years ago it was attributed to certain (typically less expensive) audio equipment not handling the switch from DD2.0 (during pause, FF, etc) to DD5.1 when play is again initiated, and vice versa.
You can test this by setting the output format from your (sending) device to DD2.0 or PCM which would preclude the audio switching and hence the popping. Some sending devices also mute the audio during FF, etc, or "stay" on DD5.1 (the last audio format until another format is actually there), thereby also eliminating the popping.
Not sure if you read initial question correctly, but I am having this issue with the built-in Netflix App of my BELL FIBE TV receiver and I don't want to mess in my audio settings in the receiver (not even sure I can change these setting into a TV receiver), because I have no issues with sound outside the Netflix App. By the way I am connected to a LG Smart TV with no external sound system.