Open a material in the material editor. Click “Lit”. Scroll down to EV 100 and untick. Change the value until you see the shader come to life. Struggled for a day until I discovered this. Whallah 
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Open a material in the material editor. Click “Lit”. Scroll down to EV 100 and untick. Change the value until you see the shader come to life. Struggled for a day until I discovered this. Whallah