I've used both material-ui react and material angular. I also faced the speed issue with material-ui react when I first used it. What you'd be doing wrong is not running webpack in production environment. Development version is usually slow and also shows warnings on console..
Add this line to your webpack.config.js
plugins: [
new webpack.DefinePlugin({
'process.env': {
'NODE_ENV': JSON.stringify('production')
}
})
],
Also read about how to optimize your react app here.. moduscreate.com/optimizing-react-es6-webpack-prod…