Dear RudieV, I have not yet delved in the Windows 10 audio stack (and don't intend to, I'm Win7 for life), but from my long experience in Win7, unless you use ASIO or WASAPI output, Windows
will get in the way and won't let you by default output anything other than 16/44 unless configured so. 24/96 is possible, even 5.1 and 7.1, Dolby 24/96 or DTS (see
https://windowsreport.com/get-dts-sound-pc/) but higher-res is totally out of the question with Directsound.
IMHO it's not productive for the Wacup developers to compare Wacup performance and capabilities with that of fourth-party players like MusicBee. I can too name a dozen apps, free and paid, that can play DSD properly, but please consider that we are all here to help make Wacup come to at least the level of Winamp, when I presume it will finally get out of beta.
Therefore, please report first if what you want to is feasible with Winamp 5.666 (patched). If it's not, there are numerous known and unknown scenarios for what may be wrong in your case.
Finally, don't assume that the DAC drivers, however expensive it is, are written properly - in the audio world the norm is a patchwork of fixes upon fixes.