# fixedTimeStep

> The fixed interval in which the frame rate updates. The tick rate is in seconds.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.VFX](/engine/6000.0/script-reference/unityengine/vfx.md)
* **Assembly:** UnityEngine.VFXModule

```csharp
public static float fixedTimeStep { get; set; }
```

### Remarks

At run-time, [Time.timeScale](/engine/6000.0/script-reference/unityengine/time/timescale.md) affects the fixedDeltaTime and deltaTime intervals. These values are less than or equal to [VFXManager.maxDeltaTime](/engine/6000.0/script-reference/unityengine/vfx/vfxmanager/maxdeltatime.md).

The fixedDeltaTime interval can be an integer multiple of [VFXManager.fixedTimeStep](/engine/6000.0/script-reference/unityengine/vfx/vfxmanager/fixedtimestep.md).