Ember cli starts very slowly

Question

I am relatively new to Ember.js and I am trying to set up a basic application to work with my Rails API. So far I have only one route and component, but it takes a lot of time to compile it:

Livereload server on http://localhost:49153
Serving on http://localhost:4200/

Build successful - 118663ms.

Slowest Trees                                 | Total               
----------------------------------------------+---------------------
Babel                                         | 29584ms             
Babel                                         | 17291ms             
Babel                                         | 8697ms              
SourceMapConcat: Concat: Addon JS             | 7880ms              

Slowest Trees (cumulative)                    | Total (avg)         
----------------------------------------------+---------------------
Babel (12)                                    | 74194ms (6182 ms)   
SourceMapConcat: Concat: Addon JS (1)         | 7880ms       

What could be here? My application uses Ember 2.4.4 , Ember Data 2.4.3 and jQuery 2.2.3 . Once it finally starts, everything is pretty normal in terms of speed. I really want to love Amber, but is this normal work?

Thanks for any help or advice!

EDIT: ( ) . ember-cli emberigniter.com. , Ember 2.x.