# LightAct Custom Time Step
Setting up **Custom Time Step** allows LightAct to control Unreal's render cycle.
{% hint style="info" %}
**Good to know: Custom Timestep** feature in Unreal is closely related to (and mostly used for) **Genlocking**. We use these terms interchangeably.
{% endhint %}
To do that, create **a new Blueprint Class Asset**.
In the *Pick Parent Class* window that appears, type in *Timestep* in the search box and then select **LightActTimeStep**.
Name the new asset any way you want, but remember the name, as you'll need it soon.
## Enabling LightAct Time Step
In the **Project Settings** window, type in **TimeStep** in the search box and then in the **Custom TimeStep dropdown**, select the **actor** you created in the previous step.
### Monitoring Genlock
You can view the presence of a genlock signal (Custom Timestep) if you open **Genlock** window.
You can do that by going to **Window -> Developer Tools -> Genlock**.
You can also use **stat fps** and **stat unit** console commands for some additional information.
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