I'm back with @firefox after a few weeks of @googlechrome in Windows 10. I had "reasons" for switching to Chrome, one of which was the Conexant audio driver, which makes Flow go nuts and eat CPU only when FF is running. Easiest fix: Kill flow in Task Manager.
How to learn EmberJS in a hurry – Jen Weber/Ember-ish https://medium.com/ember-ish/how-to-learn-emberjs-in-a-hurry-c6fdeae256a0