# PerformanceBottleneck

> Current performance bottleneck which describes if the program is CPU, GPU, or Application.targetFrameRate bound.

## Definition

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

```csharp
public PerformanceBottleneck PerformanceBottleneck { readonly get; set; }
```