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

Editing the idea.vmoptions file is only a temporary solution until the next product update. See the JetBrains help pages for a more permanent solution to setting these values via the vm settings - https://www.jetbrains.com/help/idea/tuning-the-ide.html