Roon keeps forgetting my audio setup

@support

When I am finally able to set Roon audio playback to my USB DAC it works for one day.

Next day it wouldn’t recognise the same audio device.

I try to set it up again. Then it can see my devices for 4 seconds then they disappear from the list.

When I restart Roon it can see them again and they dissappear after 4 seconds.

It is really annoying.

It is a Windows 10 PC 64 bit using latest 64 bit Roon build.

I am trying to setup a iFi iDSD Nano.