>> Emmanuel, I assume it's not possible to change the renderer from OpenGL? Or use some different OpenGL .dll file in SH3D?

Just to clarify, I meant... "...can we change from one OpenGL renderer to a different OpenGL renderer?"

Or are there any other options we can tweak in the SH3D config files to improve or change the existing OpenGL renderer in SH3D?

I have already tried the DirectX driver and that fixes the issue but requires that I run the 32 bit version of SH3D and that means I cannot render using the faster photorealistic raytracer.