This could be because multiple applications with differing sample rates are sharing Dante Virtual Soundcard as their audio interface.
In Windows, if applications with differing sample rates share an audio interface, their sample rates are automatically brought into line by Windows, so it can mix the audio streams.
This will result in sample rate conversion on one of the audio streams, which can adversely affect audio quality.
To prevent Windows performing sample rate conversion on Dante Virtual Soundcard audio, the shared mode default format for all Dante Virtual Soundcard channels should be set to match the sample rate currently selected on the Dante Virtual Soundcard control panel.
See the Dante Virtual Soundcard User Guide for more information.