If you have a PBR Substance with raised surfaces, they appear to reflect light incorrectly.
Changing the Strength slider on the Displacement channel from +100 to -100 fixes the problem.

My conclusion is the shader has the Strength value inverted somewhere. It's backwards and inside-out somehow.

I double-checked that the lights are indeed shining down from above. The top surface of raised objects should be lit, and the bottom half should be dark (in the shadow of the raised surface).

I thought some materials looked "wrong," and the square pyramid studs on this leather material finally helped me see what was bothering me.

I am including 3 pictures:
1) How it looks in Substance Player
2) Default setting in CC2
3) "Negative strength setting in CC2

P.S.
Dear Reallusion, I suggest you check the PBR shader in iC7 also.