Hello there!
For a long time already I have this strange thing, like crackling or interference, going with the sound. Both on my laptop (3200G and Realtek driver) and desktop (5600G|RX 6700 and Sound Blaster PCI-E sound card), Win 10. Happens after some time of video/sound playback and during GPU load.
I tried reinstalling/updating/downgrading drivers and that didn't help.
Is there something I could do?