Update 4.0 docked audio problem

[account_disabled]

This update broke how the switch interacts with my AV receiver (denon avr-s700w). Docked audio cuts in and out every other second. Undocked audio is fine. Power cycled Switch and receiver. Same issue. Changed HDMI cables/placement/order. Same issue. HDMI direct to TV has no audio issues except that I have to hear my awful TV speakers instead of my nice surround sound setup. Was playing steamworld dig 2 on my TV 'til about 4am and everything was fine. Then went and updated when I was ready for bed and have now been dealing with this situation for over an hour.



Mario comes out next week. How does this get fixed before then?


Please help...



I didn't find the right solution from the Internet.

References
en-americas-support.nintendo.com/app/social/questions/detail/qid/70605/~/update-4.0-docked-audio-problem
3D animated video