Hi @Zeno   Here are the results with the original file with the Renderworks Style modified as you requested (Blurriness to off and disabled "ambient info") = no improvement.   Unfortunately I do not think my spot symptoms were the result of the same bug you are experiencing...   And yes, you are correct on the three steps that corrected the issue in my file. Ultimately I think the issue was from the Light Objects (Spot and Point) hitting round/concave surfaces
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