# ParticleSystemCollisionQuality

> Quality of world collisions. Medium and low quality are approximate and may leak particles.

## Definition

* **Type:** Enum
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.ParticleSystemModule

```csharp
public enum ParticleSystemCollisionQuality
```

## Fields

| Value                                                                                          | Description                                    |
| ---------------------------------------------------------------------------------------------- | ---------------------------------------------- |
| [High](/engine/6000.0/script-reference/unityengine/particlesystemcollisionquality/high.md)     | The most accurate world collisions.            |
| [Low](/engine/6000.0/script-reference/unityengine/particlesystemcollisionquality/low.md)       | Fastest and most approximate world collisions. |
| [Medium](/engine/6000.0/script-reference/unityengine/particlesystemcollisionquality/medium.md) | Approximate world collisions.                  |