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SHORT TITLE FOR SUGGESTION/BUG/ENHANCEMENT REQUEST
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Rendering Elements without rendering complete frame.
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DETAILED DESCRIPTION OF YOUR REQUEST
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3ds Max should allow us to render only the element (zdepth, reflection, refraction, etc.) we need, just do the calculations for the specific element and don't make us wait for the entire render again.
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WHY THIS REQUEST IS IMPORTANT TO YOU
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When you render one or more elements, a normal complete rendering is also generated. In fact, the element renderings are generated during the same rendering pass, so rendering elements costs little extra render time.
If I need a change inside a specific element, I must render EVERYTHING again, lost time. Imagine how it works for changes in videos passes

.