> For the complete documentation index, see [llms.txt](https://fish-networking.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://fish-networking.gitbook.io/docs/fishnet-building-blocks/components/managers/rollbackmanager-pro-feature.md).

# RollbackManager (Pro Feature)

## Description <a href="#server-and-host" id="server-and-host"></a>

The RollbackManager must be added and configured properly for lag compensation to function properly. Objects you wish to rollback must contain the[ ColliderRollback](/docs/fishnet-building-blocks/components/colliderrollback.md) script on them. You can learn more about using it on this page: [Lag Compensation](/docs/guides/features/lag-compensation.md)

{% hint style="success" %}
Check out its API page for more specific methods [here](https://fish-networking.com/FishNet/api/api/FishNet.Component.ColliderRollback.RollbackManager.html).
{% endhint %}

## Settings <a href="#server-and-host" id="server-and-host"></a>

<div align="left"><figure><img src="/files/brQhJdQGjaLoq487lgFg" alt=""><figcaption><p>Default settings</p></figcaption></figure></div>

### :gear: **Bounding Box Layer**

> This is the layer to first test against before rolling back colliders. When a layer is specified a collider will be added to your [ColliderRollback](/docs/fishnet-building-blocks/components/colliderrollback.md) objects; because of this, be sure to use a layer which has no physics intersections and is not used for anything else.

### :gear: **Maximum Rollback Time**

> This is the maximum of seconds colliders may rollback. Using a value of 1f would allow colliders to rollback at most one second in the past, which is a very reasonable amount of time given typical player latencies are less than 100ms.

### :gear: **Interpolation**

> This is the amount of interpolation you are using on your [NetworkTransform](/docs/fishnet-building-blocks/components/network-transform.md) components. Or if you are using rigidbodies with prediction this would be the **interpolation** value on the smoothing component.