Audio Buzzing in Win10 After Update

I've been having this horrendously annoying problem whereby I get this intermittent buzzing sound in my computer speakers. There's nothing wrong with the speakers.

I have:

None of these things has any effect on the issue. The only thing I haven't done, is tried a clean install; but there's no guarantee that will work - it seems it hasn't, for a good number of folks who've tried it. This buzzing issue is apparently quite common with Windows 10 and RealTek drivers. Though people with other audio cards have experienced it, it's more rare. I don't want to have to waste my time redoing Windows if it's not going to fix the problem. I wasn't having an issue until the last update.

I'm at a complete and utter loss.

UPDATE: Well, I don't know what gave, but I decided to unplug everything from the computer yesterday, and plug it all back in. The buzzing is gone. Just to be safe, though, I'm not tempting fate by re-enabling the onboard LAN chipset. This leads me to think, though, that the problem wasn't with Win10 at all, as it has been with so many others, but was something to do with a wiring configuration or loose connector.

UPDATE - 2018 10 02: The buzzing started again out of the blue, but after uinstalling the 32 bit drivers and reinstalling the 64 bit drivers, the buzzing stopped again. I'd installed the 32 bit ones in a desperate attempt to fix at least something, and when - after that, and all the other machinations - the buzzing stopped, I didn't want to tempt fate and remove them.

UPDATE - 2018 10 10: So, the buzzing came back a couple of days ago, but moving around the tower and anything near it, seems to have solved the issue. I think, now, that the problem was routed in proximity of the speaker cable going into the tower, the antenna on the router, and maybe something else. Someone had mentioned to me that sometimes the router - physically - can cause issues when the antenna is pointed in the wrong direction, or other wires coming in contact with the speaker cables. I am 100% certain, now, that the problem was caused by that - something physical, placement of equipment and proximity, etc.

2018 09 30 - 12:20

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