Removing CTRL+SHIFT+<number> short cuts!?  

Heh, found this thread through Google:

Removing windows Control-shift shortcut

However, that's not really my concern.

It's like this, for a long time I've been using CTRL+SHIFT+1/2/3 to shift between different audio output devices. It's been amazing. Today, though, I noticed that this triggers change on desktop icon size. I can basically swear that this is new behavior on my Windows 10 setup, although it seemed documented on the web since before. Weird, it's never happened, but now (of course) I don't like using this key combo 'cuz it messes up my icon size / array.

I could (of course) change to another hot key for audio switching, but just out of curiosity, does anyone here sit on knowledge on which (if any) Registry key holds this Windows hotkey, so that I could then simply disable it that way? I know tweak ...

Code:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
"NoWinKeys"=dword:00000001

.. but this disables more than I want, I'm a frequent user of e.g. Win+R! :)

Any ideas?