Why some skin's body shader looks like plastic or shiny gold material in preview setting (OpenGl configuration with or without "enabling hardware shading")?

Some skin shaders have high specular values and/or sharp specular highlights. Maybe that's what is causing it. To determine this, you could try switching off the specular content of your lights.

 Thanx 

Preview, even hardware accelerated, does not employ all of the sophisticated shading algorithms that the renderer uses. The preview specular, in particular, is overly simplistic and does not do anything like what the specific specular nodes, such as Blinn or Anisotropic, actually do.

If you're working on a shader, the preview is not at all relevant. Look at the Poser Surface preview instead. But even that is simplifying the outcome. The only thing that confirms what a parameter or node change really did is to render.

Too many users become frustrated by setting up slow rendering, thus they avoid the proper level of experimentation that yields insight into how to configure shaders and lights.

I do not generally test shaders with shadows on, for exmample. That's a big speedup. For experimenting with lighting and shader reaction to lighting, I also don't bother with a lot of sub-pixel sampling, or a low min shading rate. Usually, the use of high quality render settings doesn't tell you anything you wouldn't learn by test rendering with low quality settings. Only when you are tweaking really tiny details does it matter.

When adjusting something like specular settings, my renders of a figure are usually around 10 seconds. I can try 20 different settings in 10 minutes. I don't need hair or shadows or anti-aliasing to learn what I need to know.

On the other hand, if my render times are 10 minutes, then I learn practically nothing in 10 minutes. Many people marvel at how much I know about the nodes. The reason is simple. On any given day, I get to try a couple hundred setups, while others who have less effective workflows only get to try 10.

I'm trying to understand how the default specular differs from the Glossy node.

First thing I do is set up both, on a simple prop like a sphere. This way I can render two setups simultaneously and examine the differences in a single render.

But I'm doing several things wrong in this case.

I have shadows on, pixel samples = 6, min shading rate = .5. And I've not cropped my render effectively so I waste a lot of time rendering stuff that is not providing information.

This is a 15 seconds render.

This is less than 2 seconds to render.

That's 8 times faster, with the same information being revealed.

I hide the ground. Now it renders in 1.33 seconds.

This is pixel samples = 1, min shading rate = 10.

Render time - ready? It is .75 seconds!!!

That's 20 times faster than when I started. It's like getting Poser Pro 2015 and a 32-core system.

is it possible to make the ground stay off?    in P7 standard.

thanks.

You mean how to make it off when you start a new scene? If that's what you mean, hide the ground (Ctrl-G). Then go into Preferences. Choose Launch to Preferred State. Then click Set Preferred State to make the current scene and settings be your default settings.

Alternatively, I find it helpful to have several prepared "empty" scenes. I save these and just load one of those instead of using File New. That way, I have ready a portrait studio, an outdoor scene, a shader testing stage, etc.

I've actually set ground off in preferred state.  And locked actor. 

Initially, it's off.   But,  at some point it usually pops on again. 
(It's a pain, when trying to pose something, it grabs the ground.)

And the tool titles won't stay off.

Too many little nitpick items?

And, I've tried going into the .ini file to toggle the 0/1  highlight option to stop that wireframe (around the teeth).  Doesn't seem to do anything.

Thanks.

the shader testing stage sounds like a good idea. 
Many nodes to refine highlights, to know which is best.

The ground re-appears on its own? I've never heard of that. Do you have Poser 7 SR3?

3?   I believe I have SR2.  

Well SR3 is a big leap forward. However, I have seen a handful of posters claiming that SR3 changed something important for them, so they stay with SR2. Each must make their own choices, but SR3 is rock solid super stable. It is also the very first version of Poser where light-based AO works perfectly, no artifacts.

I found it here: 

http://my.smithmicro.com/win/poser/updates.html

if anyone else is looking for sr3 for Poser 7

I'm psyched.  Maybe this will stop body parts from exploding in the Cloth Room.

And if the ground stays off, totally awesome.

Readme says"

Hierarchy Editor

-Enabled creation of figures from Hierarchy Editor.

that sounds interesting!

I had a near heart attack after installing SR3,
Poser wouldn't read my external runtimes where I keep my customized stuff.

Finally figured out I had to put the libraries in a subfolder titled 'runtime' to make SR3 happy.