this render is real noisy even at SL of 15.
there is only sun coming through opening in the ceiling of this box. No glass in the openings.
the verticals are simple red glass from the wizard.
MXM's for floors wall and ceilings- all used before and not with any problem. thanks
I have Direct eand Indirect checked 'on' for Illumination, ref caustics and refracted Caustics.