Find which object cause of this. You can try set off cast shadow options one by one. For Example: My actor feet reasoning of this shadow stain. When you find object(s) set off
Set false; Lighting → Advanced → Dynamic Shadow
Find which object cause of this. You can try set off cast shadow options one by one. For Example: My actor feet reasoning of this shadow stain. When you find object(s) set off
Set false; Lighting → Advanced → Dynamic Shadow