---
title: ComputeGraphSimulation.SimulationRate.Mode.variable
framework: Compute Graph
role: symbol
role_heading: Case
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, macOS 27.0+, tvOS 27.0+, visionOS 27.0+]
path: computegraph/computegraphsimulation/simulationrate-swift.struct/mode-swift.enum/variable
---

# ComputeGraphSimulation.SimulationRate.Mode.variable

Simulate once per frame, using RealityKit’s current time step

## Declaration

```swift
case variable
```