Why is IntelliJ 13 IDEA so slow after upgrading from version 12?

Question

While using IntelliJ 13 ultimate edition for a week, it just seems really slow.

First of all, the whole IDE stops for a second or so every once in a while. The Java

Answer 1

I am on 13.1, and I have found the following setting works wonders for me: IDE Settings --> Editor --> Autoreparse delay (ms), which I have set to 1500 (default is 300).

On a large project, the compiler and inspections would be constantly kicking off between interactions. The delay perhaps help to reduce heap pressure and generally make the whole experience a lot quicker. My cpu is a lot cooler as well, which probably helps.