Light source oddities using modern renderer

[Demonix 79]

To explain the setup:

 

I create a circle of 20 stills that take up about 1.5 tiles.  dynamic lights was set to 7.  Everything is ok when I light no more than 5 stills but anything past that everything in the tile gets saturated with more and more white until by the time I light the last one all textures in that tile are completely washed out by white.

 

After bringing it  up in CA, I decided to switch back to the legacy renderer and the problem went away;  light sources shed light normally but did not 'white-out' the tile.

 

I'm not sure if this is by design or not, but I wanted to let you know.  I can't use the modern renderer with my stills because it is seriously blinding.