Pointlight and Spotlight brightness mistakes

Hi, I’ve got a problem.

I need for my project only spot and pointlights, but when I use one, it gets from dark to bright in approximately 5 sekonds, but I need only a constant light.

Where is my Mistake? I only want to have a spot or pointlight with constant brightness.

Check out my answer on Auto Exposure here: https://answers.unrealengine.com/questions/316258/how-to-decrease-the-dazzle.html