the Weird crackling noise is recorded while browsing, please let me know if this is the same noise you have also.
tested a bit and found out that the noise is fixed level, and coming only from the subwoofer of 5.1 home theater through Onkyo AVR, the AVR is connected to Radeon XT over HDMI interface/cable.
If I use the line out from PC instead of using HDMI/DVI interface on GPU, I don't observe the noise. so the problem is obviously caused by GPU, Radeon RX 5700.
Gigabayt Radeon Radeon RX 5700 XT, newly updated to latest driver, software version is 20.11.2,
AMD should add this in their issue list.