Display blinking when HDMI audio starts

[raulzito07]

Hey guys, I just completed my build of a small form factor pc to go in my living room with an RTX 3060 that I got from the Verified Actual Gamer Program (thanks Linus!). My build was a success and after some driver updates (almost) everything seems to be working fine.

 

However, I have a very weird bug! Every time that I start some audio, my TV goes black for a second and when it comes back the audio starts playing. It's almost as if my TV/computer has to "load the HDMI audio mode" versus outputting just video through HDMI. Once it's "loaded" the TV doesn't go black anymore, but if I close all sources of audio it blinks for a second again and goes into "video only mode". I already updated the graphics card drivers, tried different cables, etc. I am pretty sure it is a software/firmware problem somewhere  in my new PC, since that never happened with my old laptop that I was plugging into the TV before. Have anyone ever experienced something like that and if so, any suggestions on how to fix?

 

For reference, my setup is the following:

TCL 55R613 TV

Sonos beam with 2 ones as rears plugged into the TV through ARC

Ryzen 5 5600X

EVGA 3060 XC (outputting HDMI video and audio to the TV)

Aorus B550i

16 GB 3600 Hz RAM

WD Blue 1TB SATA SSD

EVGA GM 450W

CoolerMaster NR200