In poser make sure the hair object is selected. If its a figure then for body part just select body. Then in the parameter window there are two tabs. One tab shows all the morphs, and transformations. The other tab is properties. Click onto that and you will see settings like visible in raytracing, visible, cast shadows, and a couple others. Scroll down and you should see a setting for shading rate.  Also make sure visible in raytracing is checked.

For draft renders its very helpful to uncheck visible in ray tracing for the hair. It will dramatically speed up your render times. Depending on what your going for in the final image you might even be able to get away with leaving it unchecked for your final render.  But ir you using ray traced shadows then the hair wont cast any shadows. This is where depth mapped shadows can come in handy. Ray traced shadows usually look much better though.

 

Handle every stressful situation like a dog.

If you can't eat it or play with it,

just pee on it and walk away. :-)

....................................................

I wouldnt have to manage my anger

if people would manage their stupidity......