Hello @Dale_Rowney,
Looking through your recent diagnostics, I noticed that your Roon Server is continuously analyzing your library in the background. This constant processing load over several days might be contributing to the server eventually locking up and losing track of your audio devices and local music.
We recently introduced a new feature in our latest update that allows you to control exactly when Roon runs these maintenance tasks. You can read more about it here:
Please try scheduling the background library analysis to run only during your non-listening hours.
Let us know if pausing these background processes while you use Roon helps stabilize your system over the next few days!