@BB => You are absolutely right about that.

That is why my statement: "Think light, be light" comes into play.

For a scene like this I would remove the roof as it is not visible, (or put some transparancy on the roofsurface) and put the lot in your self lit sphere, and add a infinite sun light somewhere around 30% strenght.
And go from there with some area renders to fine tune.

You clearly see all his shadows are washed away because he seems to use too many lights.

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!