Why is Grails 2.3.x so slow?

I compared the execution

grails run-app

between Grails 2.2.4 and Grails 2.3.4. Turns out Grails 2.3.4 is very slow. Even when I started a new project and installed some plugins like gwt plugin , Grails 2.3.4 gets so slow. There is another problem that only very few commands are displayed. The application comes to a line that says: "COMPILE START", then you need to wait a very long time. You don’t have feedback, so you don’t know what Grales does. I liked the Grails 2.2.x series, which gives you a lot of feedback.

What can I do to make Grails 2.3.4 download faster?