Comment by cubefox

In the original the man has a large sun shadow (from an off screen object) on the right side of the face. This is gone with DLSS 5, making the face no longer look lit mainly from the left. Only self-shadowing remains. It seems DLSS 5 is working with screen space information only, which means it doesn't know the position of any off-screen lights, which in turn seems to bias it toward an overcast sky look with omnidirectional light and without sharp sun shadows.