UE4 Lighting Study - Cloudy Weather Need Help!

So i did put a HDRI image of a cloudy sky with a giant dark cloud in the middle to have the gradient sky you mentioned on my Skybox. I also bumped up specularity by tenth and I did notice huge differences which is great however I’m still missing alot of detail on darker materials.

So heres some screenshots of my scene:

  1. Overal scene with world settings on the right
  1. The rock normal is working good for now (Spec: 0.1), maybe because of lighter basecolor?
  1. However i have problem with a table that I textured in Substance painter. Here’s how it looks with different specular levels:
  1. Heres how the table look in Substance painter (how i was hoping to look like in UE4)
  1. My skylight settings:
  1. And finally my skybox: