Indirect Lighting Cache issue

I running into an issue with indirect lighting cache and soft shadows. If I increases the source radius to the desires size I want for soft shadow it completely blows out the indirect lighting cache. Is there a way to disable indirect lighting cache for that one light? setting it the indirect lighting intensity to 0 doesn’t help. In order to compensated for the blown out indirect lighting cache I have to increase the exposure this is not the approach I want to be doing for these levels. This becomes problematic for characters/movable objects. the indirect lighting cache is so bright that the characters and movable object look self illuminated. is there any way to control the indirect lighting cache without have to reduce the soft shadow by 90% of the current value I have them at? In the test scene the auto exposure was fixed at log 0. Out of curiosity is there a way to have a light cast shadow only and no light?