No worries, I hope it will work!! 
A few more questions, it looks like it’s the sky…
Is it on Stationary or Static? …any differences if you change?
Also: have you checked different views if you could catch what causing the problem? /check the sample view if the spheres show the lighting problem…/
Reflection capture: if you place one fresh and start to move in the scene: do you see lighting differences at the problematic areas?
- 1 more idea: if you could upload the scene somewhere I could take a look at it in a few hours…