If you are a Lightwave user, then naturally you would want to render in Lightwave. For high-end software like Lightwave and 3DStudio, Poser is really just a "utility" to assemble characters, clothes, etc. For newbies that only use Poser, they may never even try to render at 4K. As you may know, Curious Labs, publisher of Poser, is supposed to soon release a $149 Pro-Pack that is supposed to make exports to Lightwave and 3DStudio easier and cleaner... (we are all waiting for this to happen).