nowefg, I usually use one UE2, and one direct sunlight. The only exception is if there’s other natural light-sources in the scene. You don’t have to dial up the UE2 to the max to get good results!! For direct light, I usually set it to 2.5% shadows, raytraced. UE2 set shading rate to 4-8, and occlusion samples to 128 (but you can get good results around 90 samples). The biggest concern is transmapped hair. Anything else is a lot less important.