Hi @Klaas_Reineke,
When you say “still not working” what exactly are you seeing? In the signal path you sent, you started buffering 16-bit Qobuz content, which get converted to 64-bits for DSP operations and then back to 16bit for output. This is normal behavior when you have DSP turned on and you can read more about this in the following thread:
If you try starting playback of Qobuz 24-bit content, does it play as expected? If not, please clarify what exactly is going wrong because the signal path looks as expected to me.