Fix high CPU usage on app

We have a App which is built using react-native. It works as a wrapper only. Webview loads vuejs application, powered by node, sockets, vuejs and syncs to microtransactions server. This problem is the app is using high CPU and because we are running the app on a low powered Sunmi V2 order receiving machine it is causing the app to freeze and not respond. Please respond to this project by using reference APPCPU01. Thanks.