As far as I know, the specular channel does not need to be connected in a PBR workflow. This is mostly 0.5 with dielectric materials. The roughnesmap should take care of the reflections. But correct me if i'm wrong;)
Some good read...
Post your images and animations made with Cycles 4D here.
Exactly what I'm thinking, leave specular at defaults and adjust roughness channel.
- Substance Test.png (605.7 KiB) Viewed 314 times
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