using hint meshes to generate game worlds -
I had done this before, but this is not using 'extrude' and instead scatters and deforms instances - should be quite a bit faster.
...
https://www.youtube.com/watch?v=XFCTYB7oBjc
UPBGE_XR_Setup_File
currently setup for /interaction_profiles/microsoft/motion_controller "WMR"
file-
https://drive.google.com/file/d/1M45y2DMl2RMsX1sLbBt5Rn48NUA3Yz0l/view?usp=sharing
...
https://www.youtube.com/watch?v=jb1i3pU43ao