I have Presonus Studio One prime up and running fine with the internal Windows Audio driver.  And my audio plays fine with Windows media player, Quicktime, iTunes, and Spotify premium.  Sonar Platinum can't seem to find that driver, so I'm not so sure that Sonar is without fault in this problem.  

Plus, Win10 installs it's own drivers. I was very confused when I first upgraded because the only "driver" was the release notes. Then auto-magically, Windows just went "bleep!" and the interface was working.

I upgraded my machine to the Windows 10 Creators update and my RME UFX disappeared but a reinstall sorted it out. 
 
 

Update:  I tried selecting the WASAPI option and Sonar Platinum could suddenly find the IDT drivers and works fine with no glitches.