Question [SOLVED] OpenXR Editor lags when I take off Headset

Hi guys, I've been looking for a solution but I haven't found it. I am desperate.

I'm developing a windows application with OpenXR: when I take off the Oculus a scene is loaded with a video. The problem is that both in the Editor and in the build there is a huge lag (even if the scene is empty) when the Oculus is not worn.

Run in background is checked.

I have enabled OculusXR Feature and this is the script that allows to recognize if the headset is worn or not:

Code (CSharp):

1. using UnityEditor;
2. using UnityEngine;
3. using UnityEngine.SceneManagement;
4. using UnityEngine.XR.OpenXR.Features;
5. #if UNITY_EDITOR
6. [UnityEditor.XR.OpenXR.Features.OpenXRFeature(UiName = "VR State Tracking",
7.     BuildTargetGroups = new[] { BuildTargetGroup.WSA, BuildTargetGroup.Standalone, BuildTargetGroup.Android },
8.     Company = "Your Company",
9.     Desc = "Tracks state changes.",
10.     Version = "0.0.1",
11.     FeatureId = featureId)]
12. #endif
13.  
14. public class MyOwnXRFeature : OpenXRFeature
15. {
16.     public const string featureId = "com.yourcompany.features.statetracking";
17.  
18.  
19.     // This is to change a number of state changes in a very granular way:
20.     protected override void OnSessionStateChange(int oldState, int newState)
21.     {
22.         Debug.Log($"OnSessionStateChange: {oldState} -> {newState}");
23.     }
24.  
25.     // This will happen when headset put on:
26.     protected override void OnSessionBegin(ulong xrSession)
27.     {
28.         Debug.Log($"Feature OnSessionBegin: {xrSession}");
29.         Debug.Log("Put on");
30.  
31.         SceneManager.LoadScene("Dashboard 2");
32.     }
33.  
34.     // This will happen when headset taken off:
35.     protected override void OnSessionEnd(ulong xrSession)
36.     {
37.         Debug.Log($"eatureOnSessionEnd: {xrSession}");
38.         Debug.Log("Put off");
39.  
40.         SceneManager.LoadScene("Videoloop");
41.  
42.     }
43. }

Is this lag an OpenXR problem?
Because with OVRManager I didn't have this problem, but the HDMMounted/HDMUnmounted events didn't work (they only worked in the editor). I can use OVRManager if you know a way to make it works in build.

I use:
Unity 2021.3.0f1
Quest 2 & Quest Pro

Thank you for your time, and sorry for my English!

 

1. Update Unity
2. Update OpenXR to 1.6 (or 1.7)
3. Update Oculus XR Plugin and/or Oculus Integration

That fixed it for me

 

Thanks for your answers, at the last I fixed my problem with OVRManager.
Long story short: With me HDMMounted/HDMUnmounted event works perfectly only with load a new scene.

For exemple in "Menu" scene, when user takes off headset:

Code (CSharp):

1. void Start()
2.     {
3.  
4.         OVRManager.HMDUnmounted += HandleHMDUnmounted;
5.  
6.         void HandleHMDUnmounted()
7.         {
8.             SceneManager.LoadScene("screensaverScene");
9.         }
10.  
11.     }

In "screensaverScene", when user puts on headset:

Code (CSharp):

1.     void Start()
2.     {
3.  
4.         OVRManager.HMDMounted += HandleHMDMounted;
5.  
6.         void HandleHMDMounted()
7.         {
8.             SceneManager.LoadScene("Menu");
9.         }
10.     }

 

Maybe use application focus instead