> ## Documentation Index
> Fetch the complete documentation index at: https://rive-migrating-to-data-binding-fixes.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# FAQ

# How do I enable support for ProMotion displays?

Support for ProMotion on iOS requires two things:

1. Using an API in the Apple runtime to set the desired FPS (range)
2. Adding an additional entry into your app's`Info.plist` file

## Example Usage

```swift theme={null}
let preferredFPS = UIScreen.main.maximumFramesPerSecond
// or
let preferredFPSRange = CAFrameRateRange(minimum: 60, maximum: Float(preferredFPS))
let viewModel = {
    let viewModel = RiveViewModel(fileName: "...")
    viewModel.setPreferredFramesPerSecond(preferredFramesPerSecond: preferredFPS)
    // or
    viewModel.setPreferredFrameRateRange(preferredFPSRange)
    return viewModel
}()
```

Additionally, add the following to your app's `Info.plist` file:

`<key>CADisableMinimumFrameDurationOnPhone</key><true/>`

You can view more information about preferred FPS [here](https://developer.apple.com/documentation/quartzcore/cadisplaylink/1648421-preferredframespersecond), and about preferred FPS range [here](https://developer.apple.com/documentation/quartzcore/cadisplaylink/3875343-preferredframeraterange).

# Why is resource usage different compared to other libraries?

See our [Resource Usage](/runtimes/apple/resource-usage) documentation for more details.