Choppy VR Preview

I’m trying to get my Reverb G2 to run smoothly with UE4.27.

I want to use OpenXR and not SteamVR.

The OpenXR and HP Motion Controller plugin is enabled. If I uncheck the SteamVR plugin, VR Mode button greys out.

If I enable the SteamVR plugin, the VR Mode button is available again, but I get choppy VR and the SteamVR ‘waiting’ pop up.

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Do you have an OpenXR runtime set? Check if other OpenXR applications work.