Asset -Scene Optimizer?
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Scene Optimizer is actually a some what unusual title for a Daz Asset when you understand what it actually does. The creators behind Daz have done their best to recreate true human characteristics with their Genesis models. To do this they have employed high resolution texture maps on multiple layers (base, bump, normal, sub-surface scattering etc). Unfortunately to do this the hardware requirements are somewhat severe. Hence 'Scene Optimizer' serves to reduce the resolution of these texture maps and also to remove them from a scene, such that your hardware can handle them to do GPU rendering.
Whilst the resultant image from using Scene Optimizer is actually worse than not employing it, unless you are in an extreme close-up the difference is not perceivable. It does however allow you to render the scene using your GPU hardware rather than your CPU hardware which is usually 10+ times as fast.