Also - Vue 6 Infinite has the standalone render (not sure if other Vue 6 versions have this).  You can speed things up a bunch using this.  Just save your picture with the render settings you want it to render with, close it, then select a new picture (this is a good time to do a full reboot).  Go to Render, Batch Rendering.  Select your Vue picture and it will render away.  The benefit of using this is that your computer does not have to hold in memory the entire scene. 

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