It is everytime the same thing with IDEs. They do a good job, but they do it not as fast as your (x)emacs or (g)vim...
Now you can change it:
Take a look at Shay Shmeltzer's Blog.
Here are my favourites:
1. Get a better machine
4. Having delays switching back to JDeveloper from other applications?
Some more tips are at the
So move on and write your sources!!!