Windows 10: "App volume and device preferences" does not remember the output that I set for my game.

I have set a game PUBG to output it's sound to a virtual audio device. This works great.When I close the app and open it again later on, the game is set back to 'default', meaning I have to put it back to the virtual audio device every time.Is there any way I can get the "app volume and device preferences" setting to remember what I have put there?

:)

 

Windows10 not always remembering App Volume Device Preference settings

Windows10 all builds since 1803 not always remembering custom sound settings.
This is an issue I see on both my PCs (builds 1909 and 2003). Originally Intel builds, now AMD. Same across all.

I use Voicemeeter fairly extensively. VM Banana on one and VM Potato on the other PC to manage my audio.
It's not overly complex, but I make good use of the virtual cables and it all works grand.

The one issue I have is with the W10 App Volume Device Preferences:
Settings | Sound | Advanced Sound Options | App Volume Device Preferences

I have headphones on one PC and speakers on the other, so I set some applications to use alternate outputs for VBAN audio routing and it works perfectly, but there are some applications that don't remember their setting at the OS level and I was wondering if anyone else has had a similar issue and know how to resolve it?

It only does this for some applications and some games, not all, so it can work and I'm not sure why some lose their setting.
The output still looks correct in AVDP, but I can see in Voicemeeter that it's reverted to the default desktop output.

The only way to fix it is, in Windows AVDP, change its output to another device then back to the correct one and then it works.

It happens if I close and re-open the application which is particularly annoying when it's something like a music app (like PlexAmp) that I might close/open several times during a day.

I see this on both my PCs.
Both were fresh builds of W10 and fresh installs of VoiceMeeter (+ Virtual Cables)

Has anyone else seen this and know how to stop it from ignoring the device preference setting?

 

The audio output device setting in 'App volume and device preferences' doesn't actually work at all.

In 'App volume and device preferences', I set an output audio device other than the default device for my app. I then closed and reopened the application for my change to take effect.

Windows 10 did remember the sound devices I assigned to the individual app whenever I launched the app. But my app will not output to the assigned audio devices at all. It persists to output to the default one.

What's wrong?

My app is simple enough. It's a console application written with C#.

var synthesizerMy = new SpeechSynthesizer();

//synthesizerMy.SetOutputToDefaultAudioDevice();

synthesizerMy.Speak("Are you ready?");

synthesizerMy.Dispose();

And I am sure that the driver of this assigned audio device works well. When I change the default output audio device to it, my app then will output to this usb audio device.

So, I wonder why the output setting for my app in 'App volume and device preferences' does not work at all.

My Windows 10 Pro is Ver. 1909.

Thank you for your advice.

 

The audio output device setting in 'App volume and device preferences' doesn't actually work at all.

Thank you, sir.

But my question is whether the output setting for individual app in 'App volume and device preferences' exactly work. My app is just a simple enough speech app.