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# frameInterval

The number of frames that must pass before the display link notifies the target again.

```
var frameInterval: Int { get set }
```

## Discussion

The default value is `1`, which results in the system notifying your app at the refresh rate of the display. If you set the value to a value greater than `1`, the display link notifies your app at a fraction of the native refresh rate. For example, setting the interval to `2` causes the display link to fire every other frame, providing half the frame rate.

Setting this value to less than `1` results in undefined behavior and is a programmer error.

---

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