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# beforeLowLatencyCATransactionCommit

A phase that runs before a Core Animation transaction commit for a low-latency event.

```
class var beforeLowLatencyCATransactionCommit: UIUpdateActionPhase { get }
```

## Discussion

This phase runs before <doc://com.apple.documentation/documentation/QuartzCore/CATransaction/flush()> for a low-latency event.

This phase is off by default. You can request it to run by setting [`wantsLowLatencyEventDispatch`](/documentation/UIKit/UIUpdateLink/wantsLowLatencyEventDispatch) to `true`.

---

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