Having a new UR44C running for a few days, I noticed that starting to play music from Audirvana would not have the UR44C set to the output clock of the title automatically. So, when a song has 92 kHz content and the UR44C is set to 44.1 kHz. At play start Audirvana keeps running at 44.1 kHz at the output. I have to manually set the clock in the UR44C driver app in Windows 10 and restart play to have Audirvana show the 92 kHz for output.
Automatic clock adjustments had been working with my prior sound device, so I assume that the problem is not with Audirvana.
Maybe there are experiences over here.