---
title: "Optimizations - Live"
url: "https://help.maxon.net/r3d/maya/en-us/Content/html/Optimizations%2B-%2BAdvanced%2BLive.html"
section_path: "Redshift Render Options > Redshift Live > Advanced Render Settings > Optimizations - Live"
description: "When in use, it allows Redshift to update scenes more quickly by aggressively optimizing/limiting what is processed from the scene before starting a …"
---

# Optimizations - Live

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# Optimizations - Live

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## Ray Tracing Acceleration

### Fast Preprocessing

When in use, it allows Redshift to update scenes more quickly by aggressively optimizing/limiting what is processed from the scene before starting a render. This is ideal for maintaining high interactivity during [Interactive Rendering](https://help.maxon.net/r3d/maya/en-us/Content/html/Sampling%2B-%2BAdvanced.html.md) but it comes at the expense of some ray tracing performance.

- **None** - *Never* use Fast Preprocessing.
- **IPR Only (default)** - *Only* use Fast Preprocessing during Interactive Rendering.
- **All** - *Always* use Fast Preprocessing for both Interactive *and Final Rendering*.

By default Redshift *only* uses Fast Preprocessing during IPR rendering to ensure that everything is appropriately updated during Final Renders.

> **Note:** If you notice differences between interactive rendering and final renders try setting Fast Preprocessing to None to see if that fixes the inconsistencies at the expense of responsiveness during Interactive Rendering.