# PerformanceBottleneckChangeEventArgs

> Event arguments for performance bottleneck changes. These are used in the PerformanceBottleneckChangeHandler.

## Definition

* **Type:** Struct
* **Namespace:** [UnityEngine.AdaptivePerformance](/engine/6000.5/script-reference/unityengine/adaptiveperformance.md)
* **Assembly:** UnityEngine.AdaptivePerformanceModule

```csharp
public struct PerformanceBottleneckChangeEventArgs
```

## Properties

| Property                                                                                                                                               | Description                                       |
| ------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------- |
| [PerformanceBottleneck](/engine/6000.5/script-reference/unityengine/adaptiveperformance/performancebottleneckchangeeventargs/performancebottleneck.md) | The performance bottleneck reported in the event. |