Thank you! I beat my problem with shadows lingering. But can you explain more about concave areas. I ceparate mesh “by loose parts” in Blender, and it helped a little, but the flickering shadows did not completely disappear. I saw a helpful video “Lumen Explained” from
William Faucher, and tried to enter the commands r.Lumen.Visualize.CardPlacement 1, but nothing happened. Also in Show/Visualize there is no “Lumen scene” or “Lumen Global Illumination”.
