ScreenMachine-James, I confirm this is the same exact issue I’m having. Seems there are two issues: 1. The need (desire) for Roon to implement WOL on its Control apps, and 2. A problem whereas Roon prevents PC from going back to sleep once accessed from a remote Control app. I’ve posted detail of my experience with the sleep issue under the separate thread Roon is preventing Windows from sleeping
Sounds like you and I have a similar setup and are experiencing similar issues.