I have tried 6 or more different ways to configure Pimax Play in an attempt to run it without Steam VR. There appears to be 2 ways VR is supported by AH, one is Steam VR and the other is Oculus VR. I can run Pimax and AH without Steam VR but the VR stream to the headset is not there, just the audio. Pimax uses Open VR natively, but AH does not seem to support that. Another solution is a different but similar VR app to Steam VR. My goal was to eliminate any unnecessary intermediate apps. But that is not possible. So, I will have to live with the Steam VR. The problem I have with Steam, besides it using resources, is sometimes when I start AH and put on the headset there will be a Steam pop up asking me if I want to resume the game. The only way to clear that is to use the hand controllers, however having those powered on interferes with the gameplay. I prefer to keep them powered off. In order to clear the pop up requires powering on a hand controller, using it to clear the pop up, powering off the hand controller, restarting AH and hoping the pop up does not reappear.