From the description :
Mhh, what do you think of this? Do you think this product would work with non-standard shaders like the pw shaders?RenderThrottle is a render optimization preset manager add-on for DAZ Studio.
Using RenderThrottle will most always render images faster than using the default DAZ Studio render settings with comparable results when using the Hi preset which can be almost twice as fast. This speed boost is achievable by giving you access to critical 3Delight parameters that are otherwise not available in the DAZ Studio interface. The other presets allow you to quickly and easily render with test and preview images that can be multiple times faster than using the render settings alone.
RenderThrottle also provides four customizable, and sharable render quality presets. The RenderThrottle options interface gives you control over what settings the given preset will affect. RenderThrottle can be made to only drive global render options, UberEnvironment specific options, or both.
EDIT : More information from the DAZ forum
AndIt exposes the shading rate parameter which most poser firefly users should be familiar with.
lower value = sharper/more detail, slower render
higher value = less detail, faster render
Daz Studio default is 0.2 (so if you lower it to 0.2, you should get the same render time). You can push it higher to get faster renders at the expense of quality.
According to the 3Delight Docs.Judging by my results so far, I think they are right. I can see no difference between DS and RT renders (so far). At the very least, it would allow for much quicker test renders, even at that it is worth the money to me.ShadingRate
Test renders should specify "ShadingRate 4" or more. Final renders should use "ShadingRate 1". Smaller shading rates are rarely needed and are often used by shaders that produce high frequencies(49).