Audio is stuttering since upgrade

[tuqqer]

Ok, got rid of everything in Audio devices, except Built-in Output.

Also uninstalled many apps that use audio, such as Skype, WhatsApp, Zoom video conference, and so on. (down to .kext files in some cases).

Audio on that headset still stutters. On my other Macs, that same headset works fine.

Man, this one's got me baffled.

I may need a nuke and pave.

Current audio: