Automatic routing not working if audio application is already open (Spotify)

[M1S2]

Hi,
I try to route Spotify to a specific audio device. I want to save the desired routing once and then only reload it on every startup of the audio-router (saved routings).
If the audio-router is open before Spotify is opened, my saved routings are applied correctly and the audio from Spotify is routed as expected.
But most of the time Spotify is running before the audio-router is opened. Then the saved routings aren't applied. When I close Spotify and reopen it again, the routings are applied.

[EntityReborn]

Actually, trying to route spotify after it's already running causes: https://i.imgur.com/GVl6JYv.png.
Seems to happen regardless of whether it was already open or not.

[M1S2]

I've found another solution to route Spotify to an output device:
You can start Spotify with the "--enable-audio-graph" option. With this, you have an additional setting in the Spotify settings where you can select your desired output device.
If you want to route the output of Spotify, you will have to start it with the following command: "C:\Users<UserName>\AppData\Roaming\Spotify\Spotify.exe --enable-audio-graph". If this option is missing, Spotify uses the default output device.