Start app very slow and bad FPS on Android device

What’s going on? My device: Sony xzs, android 8.0.0

Steps to reproduce

1. Create a new app using ignite
2. yarn and run on Device
3. The first time open app always slow, delay about 30s to 1 minutes to start app, i was using ignite old version before, about version 5.x its ok, not slow. But now with 6.2.0 on the same device was slow, i don’t know the reason why.

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ignite doctor results: version 6.2.0

[mzohrab]

Sorry for late response. I am back with some results that may help everyone with the same issue. As I have stated above that I use bowser boilerplate in all my RN apps, and each one had the same problem. Start up time takes to 15-20 seconds sometimes and freezes several seconds when the initial screen is visible. Nothing did not help (enabling hermes, caching images, removing console usages and etc.). Then, just bypassed the issue as it worked fine on newer android devices. But yesterday, it eventually got on my nerves and I decided to find the culprit. And I found! It is react-native-keychain package. It will kill your apps startup performance. If you have an older device (mine is Xiaomi MI 6) it gets worse. The package loads very slow and throws exception multiple times: android.security.keystore.StrongBoxUnavailableException

Keychain is being used in the boilerplate in utils section (app/utils/keychain.ts). So workarounds would be:

• Simply, if you do not need it, you can remove the package.
• Try alternatives, like https://github.com/mCodex/react-native-sensitive-info/tree/keystore (did not test though)

Additionally, I have found a thread, where the issue is escalated. Check that below. https://github.com/oblador/react-native-keychain/issues/314

Hope this update would be helpful for someone.

[frankcalise]

react-native-keychain removed in #2003 - will be released in Ignite v8: Maverick

Another recommendation for anyone looking for similar functionality would be to check out Expo’s SecureStore