Ah, mine works like this: Green, Black and Brown all go into the Subwoofer, which then has satellite speakers connected to it. Tempted to ditch it and go digital.

Not here! Stereo just means it uses the little side speakers and ignores the woofer. By the looks of your Analog panel, you don't even have a subwoofer connected. Just the green jack? Unless you're...

It's driver 6.0.1.7950 from the zip file linked in the first post of this thread.

This one? I don't see it.
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So where's the speaker fill option? Or at least some way to tell it it use the woofer? I have set my other speakers so they're not full range, so it should be using the woofer, right? Even my ancient...

Yep, I'm testing it with VLC. Tried games too. Zip.

There's no bass redirect or speaker fill options, it seems. Only this, which does nothing:
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Well, according to the Realtek control panel, it should work. The subwoofer does its thumpy thing when you send it test tones. But if you try to play a movie or, anything else really, it doesn't do...

Well, I'm running out of options here. My subwoofer has never worked well under Windows 10. The Realtek configuration utility will play its test tones through the subwoofer, but Windows itself just...