Thanks! That already works a lot better.

To further improve things, I would suggest two changes to your webpack config:

1. Use the production version of React. It seems that you are using the slightly slower development version. (In webpack this is done by defining process.env.NODE_ENV = "production" and eliminating dead code afterwards)

2. Stop using webpack in development mode for your deployment. There are 272 eval() calls in your bundle because of this: https://raw.githubusercontent.com/zzarcon/react-circle/c1480...

Both of these things are already taken care of by the production mode in webpack 4.