I’m confused - do you mean you’re playing Qobuz on your receiver and feeding that to the Pro’s optical input, and from there to where? Or do you mean the other way round I.e. you’re playing Qobuz using the WIiM home app on your Pro which is feeding audio over its optical output into the AVR’s optical input?
If the latter, does your AVR support a 24/192 signal on its optical inputs? Do you have another cable you can try? If you reduce the Pro’s output resolution to 24/96, does it perform without skipping?
I’d also try rebooting your Pro, and perhaps your router, as well as deleting and re-installing the WIiM Home app to see if that helps