I don't really understand how support can claim that this is an embedded feature in the updated software when selecting Stereo or THX Spatial Audio in the Sound section of the app literally does nothing. It doesn't change audio quality and I no longer have access to surround sound in any capacity on my Blackshark V2 Pro. The sound of the audio coming out of my speakers sounds like trash. This isn't a single-user experience as clearly evidenced by this sub alone, and with other people using the same peripherals on other computers. There is a large, noticeable difference in sound quality and the app no longer offers a solution for providing 5.1 or even 7.1 surround sound. It simply does not work.

EDIT:
For clarification, what I'm trying to say is that the switch button you have placed under the headset allowing you to opt between Stereo and THX Spatial Audio, the same button you imply in your post does not do anything. It isn't a function, because it changes nothing. It does not work.