I noticed a large performance drop when the VR laser pointer hits an object with a lot of vertices/faces.
This can be reproduced with the following Playground link: Babylon.js Playground
It creates a mesh with about 2 million vertices.
If I view this scene in VR ( using Firefox and Oculus Rift ) it is working fine.
But as soon as the laser pointer touches the mesh the VR gets totally frozen.
The mesh is neither pickable nor does it have enablePointerMoveEvents or checkCollisions set to true.
So I wonder what influence the mesh has on the ray.