# XR Performance Specification

## Overview

Performance requirements and optimization strategies for XR experiences.

## Frame Rate Targets

**Target**: 90 FPS (VR) or 60 FPS (AR)
**Minimum**: 72 FPS (VR) or 30 FPS (AR)
**Measurement**: Consistent frame timing

## LOD (Level of Detail) Strategies

### Strategy

**Distance-Based LOD**:
- High detail for nearby objects
- Reduced detail for distant objects
- Cull objects beyond view distance

**Performance-Based LOD**:
- Adjust detail based on frame rate
- Dynamic quality adjustment

## Asset Optimization

### Optimization Techniques

- Texture compression
- Geometry simplification
- Animation optimization
- Occlusion culling

## Network Data Streaming

### Strategy

- Load critical data first
- Stream additional data progressively
- Cache frequently accessed data
- Preload based on user movement

## References

- XR Architecture: See `xr-architecture.md`
- XR Scenes: See `xr-scenes.md`