Not official support, but, I would first as a test, Disable the Wasapi device. Reboot the device and the Roon Core and see if you get the initialization failed message.
For example, a user with similar problem and resolution
Not official support, but, I would first as a test, Disable the Wasapi device. Reboot the device and the Roon Core and see if you get the initialization failed message.
For example, a user with similar problem and resolution