I believe this setting might be causing IntelliJ IDEA to behave slowly. I used to get a popup and finally clicked 'do this automatically', and now it is on, but I want to turn it off again. How can I disable Maven 'auto import'?
Uncheck Project Settings | Maven | Importing | Import Maven projects automatically
.
For IDEA 14+ it's under Settings | Build, Execution, Deployment | Build Tools | Maven | Importing | Import Maven projects automatically
.
For IDEA 2020+, open Settings | Build, Execution, Deployment | Build Tools
and check "Reload projects after changes in the build scripts"
and "Any changes"