Cannot select parent material when importing GLB files

Hi Jean-Luc,

Here is the parent material I am pointing my GLB files at:

For textures, I’m using one albedo, one normal, and one ORM packed texture. I have a Switch Parameter node on the AO so I can disable AO if I’m using baked lighting.

I looked at the default opaque GLTF material and it looks quite complicated. I assumed my material would be more efficient but now you have me wondering. Here’s is the info from the default opaque GLTF material, but I’m not 100% which of these parameters are most “costly”.

Is my parent material more or less efficient than using the default GLTF material?

Thanks.