There could be more than one issue. when you say the sound drops, you cant hear anything..?
1. If you cant hear anything, then the issue sis with the frequency of the router.
2. if you hear a very low quality sound, then the issue is different. this happens when the soundbar loses connection with the subwoofer. ( once you connect the tv with sound bar using sound sync, then tv speakers wont work until you disconnect the sound sync.
you need to put the sound bar and subwoofer in such a place where there is nothing in between them. they should see each other without anything in middle.
I have the similar issue, but this one is the wireless connection between the sound bar and the subwoofer. I have my subwoofer behind my recliner.
3. try to play the same audio again with and see if the drop happens at the same point of time in the song or audio. this could be the audio track issue.
