>>392074581
>Index or Vive
No, because they interface with SteamVR natively, but with a Quest 2, yes. The performance overhead and issues are caused by needing to run through compositors in order to match the SteamVR platform, as most headsets nowadays have their own software they use. Oculus is the most notable example of this as they had their own shit for a long time. To explain it in the most simple terms, even though this isn't quite accurate, think of it like emulating something, it's a drain on resources. The reverse applies if you're using SteamVR to run Oculus native games via Revive.

This is why OpenXR is becoming such a pushed thing because every headset can set itself as the openXR runtime and bypass SteamVR entirely, even if you're running the game via steam. It's not exactly Valve's fault here, just OpenVR being a much more proprietary standard where each company has far more of their own special mix of runtimes, more or less. It's why compatibility from some real old VR games can be a huge headache if not running on a Vive or Oculus HMD.