There's something wrong with your setup &| stack. I've run a full stack locally, a build setup with a watcher, a django/gunicorn setup with file watching, mysql/redis/rabbitmq, and i barely nudge the cpu.

I'm betting your if you cpu is hot constantly while developing, it's file watching that's the issue. I had to do some work to get things to use proper file system events in macos and not just polling with my legacy gulp project. try installing fsevents if it's not already?