Maybe db4tech has any ideas? He programmed the advanced render plug-in.

Aw Hans, as much as I wish that was true, Emmanuel is the programmer! [:)]

Thank you though!

I wonder why the doors (on the left) are rendering with an unusual shiny patch in the middle?
Good work trying to find the walls solution, very thorough!

db4tech

***

Good catch whippet on finding the solution, not sure I would have noticed the slider since it was only slightly moved! [:)]

I never realised the walls rendered as transparent, if the transparency slider was changed, I thought that feature was purely for OpenGL 3D, to assist in positioning difficult items close to walls.

db4tech