Problem: Transmission kills specular lights

Dear all,

We’re buildilng a 3D Configurator for flat surfaces in the print industry. We have added Transmission Material and cleacoat in order to show a raised UV-Varnish like print. It works perfectly well when combining Normal-Maps and Roughness maps combined with alpha maps to only show the “printed” parts. It works super for “colored” Varnish, but in order to print transparent ink, we need a transmission map. We added Transmission value but when we seet the value to 1 (or anything in between) - the specular lights seem to fade and become very dim. Any ideas what’s going on here?


Here’s a link to the viewer
https://3d.variussystems.com/3D_ASH/viewer.html?card=Lenticular

any help is much appreciated.