The reason of Your problem i think is "not completely" install of aaf uad drivers. Windows shield sometimes block copying driver files to root/windows/system32 i mean driver for aaf uad bus in system components. Probably You have not uninstalled parts of hda drivers so windows loads him as default. Solve of this problem is:
-run pc in safe mode and delete every drivers for realtek in driverstore, next run pc in disable certificate check and WITHOUT wifi connection run dch uad drivers ( by Alan F.) Installer as administrator. I suggest delete ALL uwp apps installed in Microsoft store too. After install when You'll see "install complete do You want reboot pc?" choose NO and then install driver manually from device manager. After this run realtek audio device tweak and set PID and VID values to 0000.after reboot Realtek Audio Console MUST work. Other uwp apps too. At finish for enable multi speakers modes set realtek audio device tweak like this on screen:
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Save and reboot pc. after reboot all should be fine
Here i add something for "a little more advanced audio fans" - new spatial mode full enabled - dtsxultra
) i was enabled this mode on 3 lastest versions of uad drivers and all versions of hda drivers and i think the quality of sound is hmm....
Impressive
) thnx
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