Hi koscof1. I have similar issue. My DAC is m2Tech Young DSD ( Xmos based) and after Win update at this summer (Win 10 -1903) DAC is not visible in my system with PPAv2 USB Card. It works only with integrated mobo usb ports. USB PPAv2 card in my system also works with other usb devices like pendrives, mouse, hotas stick etc.. I wrote to Paul Young but answer was simply - they are not supporting this card any longer. So also tried get help from DAC manufacture (M2Tech) but they reply the same Young DSD was dicontinued with firmware support in 2018.
So I logged here to check compatybility and considering to buy Jcat Femto USB card but looks like this is Win driver/firmware problem and I will not get my USB Dac to work with any low jitter audio USB cards.
Tried reinstalling drivers , firmware but no luck so far. Even wasapi mode its not working - just both devices together are not working, win 10 do not recognize my DAC when pluged in dedicated audio usb port !! :/
@Marcin_gps - sa jakies szanse ze Young DSD zadziała z FEMTO ? Wyglada na to ze uzywa drivera nec/renesans UPD720201 identyczny jak w kartach PPA..
I have not seen this issue before, so can't be sure. I'd check if a USB memory stick is visible when inserted to the USB card's port. If it does, then the card works. I'd reinstall DAC drivers then.