I have worked on the Ember apps since the beginning of the project. It easily takes 20 minutes to start a server up. At its worst it took me maybe 35 minutes-- enough time to come to work, start the server, go have breakfast. Add in that the server crashes a couple times a day and I lose ten hours a week from tooling.

It used to take a huge amount of time to initialize a repository as well, but they recently switched to Yarn and that helped a lot.

I'm planning on leaving because as parent says, it's been a disaster from start to finish. Developer tooling does not help you be productive, the app performance is quite poor, and it's just not enjoyable to work on.