One important step in setting up a PC for high-resolution audio playback was missed.
Windows defaults to outputting audio at 16bit/48kHz, unless you specifically pick a different format. This setting is pretty buried in Windows 10. If you don't change this, you won't actually be hearing 24/96.
Open start and type "Sound Settings" to bring up the very barebones Windows 10 sound panel. Then click "Device Properties", and then "Advanced Device Properties". Select the "Advanced" tab, and under "Default Format", select "24 bit, 96000 Hz (Studio Quality)".
Now you're ready to roll.