Depends what you mean by slow. I don't find waiting a couple minutes to be slow. As a preview renderer the area box is fine for checking things out, the open gl preview while not showing lights accurately does show textures fairly well and actually rendering something I've yet to have to wait longer than 10 minutes, I don't honestly find that unreasonable or particularly difficult to live with. Personally I'm utterly sick of the Poser 4 renderer, have been for years which is why I went off looking for something else - starting with Bryce and finally ending with Cinema, all the apps I tried had render times that dragged into multiple hours or days. In that respect the 3Delight engine used by Studio still comes over as extremely fast and efficient but, like Poser, lacking in some areas. Those areas obviously add considerable amounts of time to renders. If you're used to using Poser 4 and having to render constantly to preview something then I can understand why you don't like the slightly longer times of Studio, but you don't "have" to render constantly in Studio to check out what you've done. If you're checking lights in a scene, then just select a small part of the image to render to see how the lights are playing on that area of the surfaces, it's as good a clue as rendering the whole thing. Studio has had a spot renderer for some time and that, like the same option in Bryce is more than adequate for checking areas of the scene for lighting/texture results. Not to mention that it's also a heck of a lot faster than waiting for the whole image to render.