In a non-XR project I’d have an actor get the player controller’s camera manager and get the camera position/rotation from that. Then it would set its actor location, and for the final piece of the puzzle I’d make sure it was in the last tick group (after the camera updates).
However, with an XR camera being used, this doesn’t work anymore and there’s some terrible jitter, as if I had forgotten to set the last tick group. I’ve been poking around at using GEngine.XRSystem, but the public XR headers seem to be riddled with references to generated files which are not available to #include in a project?