# defaultSolverIterations

> The defaultSolverIterations determines how accurately Rigidbody joints and collision contacts are resolved. (default 6). Must be positive.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.6/script-reference/unityengine.md)
* **Assembly:** UnityEngine.PhysicsModule

```csharp
public static int defaultSolverIterations { get; set; }
```

### Remarks

If you are having trouble with connected Rigidbodies oscillating and behaving erratically setting a higher solver iteration count may improve their stability (but is slower).

This value is usually changed in `Edit->Project Settings->Physics` inspector instead of from scripts.

**Note:** Changing the defaultSolverIterations does not affect already created Rigidbodies. To change an existing Rigidbody please use [Rigidbody.solverIterations](/engine/6000.6/script-reference/unityengine/rigidbody/solveriterations.md).

Additional Resources: [Physics.defaultSolverVelocityIterations](/engine/6000.6/script-reference/unityengine/physics/defaultsolvervelocityiterations.md).

### Examples

```csharp
using UnityEngine;

public class Example : MonoBehaviour
{
    void Start()
    {
        Physics.defaultSolverIterations = 10;
    }
}
```