How to fix strange bright aura around objects?

Development Rendering
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1

Hello. I have strange problem with objects over my table:

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And that thing is happening only with decal actor I’ve download from quixel. But when I’m placing that actor over something else it looks absolutely normal.
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image1427×531 58.5 KB

I thought the problem is in material of table, but I don’t see anything special in it:
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image1920×902 121 KB

Why is it happening?

2

Reflectivity/specularity value(s)

Ps no object in PBR should ever be #FFF, so make sure that isnt the case for the decal too. On top of fixing your specular/roughness.