THX Spatial not working with Nvidia Shadowplay?

Hey! using a Razer Barracuda Pro:
in Windows 11 i have two options for Sound Output: 

1 = Razer Barracuda Pro 2.4
2 = THX Spatial Audio 

i would like to use 2 as its the better option for Gaming
but sadly, when using it, there is no Sound recording from Nvidia Shadowplay

Any idea? THX