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Problem with WMR Headset and OpenXR in 4.25 (SSR and AO Flickering)

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    Problem with WMR Headset and OpenXR in 4.25 (SSR and AO Flickering)

    We have a Windows Mixed Reality headset (DELL Visor 18) that we use with UE's OpenXR plugin.

    Since build 4.25 we noticed heavy flickering when moving your head on some surfaces (while others don't show that effect). This problem didn't exist under 4.24. Nothing else was changed on the project.

    Did anyone else encounter problems with WMR headsets under 4.25?


    EDIT: After investigating further, the flickering affects screen space reflections and ambient occlusion. If you turn off both post processes off, the flickering on the WMR headset disappears. This was tested on an Nvidia GTX 1070 with latest drivers.

    I wonder if it could be related to this bug:
    https://issues.unrealengine.com/issue/UE-93360

    However, we only see the flickering on the DELL visor, not on Oculus Rift or on PC screen. Temporal AA is set as the default AA method in project settings.

    Last edited by Sharkster-NXR; 06-24-2020, 07:56 PM.
    NORD XR
    Visual. Virtual. Interactive.

    https://NordXR.com
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