Fixed occluder issues in Zenith and Core, more controllers recognized at once.

Fixed visual bugs and a quality of life issue:

• There was a room in the Zenith where the walls would turn transparent when viewed from a certain angle and three doors in the Core where the next room was invisible until crossing the threshold, those issues have been fixed.
• Players with multiple controllers connected should now be able to use any of the first 8 they have without having to disconnect it and reconnecting it in the first port.