The headset appears to be Quest 3s and the character uses motion trackers similar to SlimeTrackers, so it kinda is real?

Do you use a VPN?

I see your issue is fixed, however next time you could use protontricks and through that run winecfg to rearrange drive letters, maybe their launcher is very picky about it

KDE Plasma Wayland, I’m using it for gaming mainly and occasionally for VR.

Pros:

• supports DRM leasing mandatory for wired VR headsets
• supports tearing (also in windowed apps but requires an additional setting) which reduces input latency in games
• usually all the new fancy features, ex. HDR, appear quickly
• decent support for fractional scaling (handy on laptops)

Cons:

• you might encounter bugs. While Plasma 6 has been a much better experience as opposed to older versions of it, there are still some bugs here and there appearing between the updates. As of this writing thought I can’t recall any bugs on my system.

Try passing SDL_VIDEODRIVER=x11 in launch parameters