Falls out of the reactioncommerce box, who can tell me what?

Question

Node.js

Hello.
I generate a new react project and run
reaction init
cd reaction
reaction
Using settings file at settings/dev.settings.json
Setting up plugin imports...
[]
=> Started proxy.
=> Started MongoDB.
----
Then I start eating processor time, 100% and the process dies ... who faced this, where can I look? If there are any ideas based on experience, I'd be happy to hear them.