---
title: optimized
framework: spatialpreview
role: symbol
role_heading: Type Property
path: spatialpreview/usdpreviewsession/optimizationsteps/optimized
---

# optimized

Allows the USD stage to be analyzed and potentially simplified or replaced with a proxy before previewing on a device. The USD analysis decides at runtime whether the stage can be passed as-is, simplified in place, or swapped for a lower-fidelity proxy based on scene complexity and session capabilities.

## Declaration

```swift
static let optimized: USDPreviewSession.OptimizationSteps
```