The app.js is in size of 5MB and is not getting cached in my Chrome browser, which means it is fetched from the server every time when the page loads (slowly). Almost killed my limited Internet bandwidth.
Advice:
1, add Expires and Last-Modified HTTP headers to static files
2, compress .map files while transferring
3, reduce the size of app.js by removing useless code or some kind of compressing
Despite of above issue, the wallet works fine for me.