Image Blur effect becomes more than 50% lighter with scheme "Release"

[dylancom]

Environment

React Native Environment Info:
System:
OS: macOS High Sierra 10.13.6
CPU: x64 Intel(R) Core(TM) i7-4750HQ CPU @ 2.00GHz
Memory: 340.12 MB / 8.00 GB
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 9.8.0 - /usr/local/bin/node
Yarn: 1.9.4 - /usr/local/bin/yarn
npm: 6.3.0 - /usr/local/bin/npm
SDKs:
iOS SDK:
Platforms: iOS 12.0, macOS 10.14, tvOS 12.0, watchOS 5.0
IDEs:
Xcode: 10.0/10A255 - /usr/bin/xcodebuild
npmPackages:
react: ^16.6.0-alpha.8af6728 => 16.6.0-alpha.f47a958
react-native: ^0.57.4 => 0.57.4
npmGlobalPackages:
create-react-native-app: 2.0.2
react-native-cli: 2.0.1
react-native-git-upgrade: 0.2.7
react-native-rename: 2.2.2

Description

When using the blurRadius prop on Image (https://facebook.github.io/react-native/docs/image#blurradius) the effect becomes much lighter when building your app for production (scheme: Release).
In my case I was using blurRadius={100} in development (tested on device), but to achieve the same result in production I have to more than double it to a radius of like 230.

[orta]

I couldn't repro this when changing the Xcode scheme (from Debug to Release)

Debug

Release

Nor on my phone via Expo

• is this still a problem?

[rickhanlonii]

Hey @dylancompanjen, if you can provide a way to repro we're happy to re-open and take a look 👍