I actually did start noticing sound crackle/stuttering as well for the first time, prompting me to start messing with sound drivers, and suddenly the VR video aspect was noticeably improved all for no reason seemingly out of the blue.
And then I realized the Oculus software had been updated to v25 explaining the smoother graphics but yours is the first post mentioning the sound and it didn’t occur to me that perhaps v25 was playing a role in that.
I also found some talk about it in the Oculus forum v25 discussion.