I've been having really bad problems with all the 9.x versions actually
where anytime I make a code change or try to type in a class name IDEA
usually tends to sit there for over 10 seconds before giving me intention
popups or any kind of information about my class.
Another example is if I have a red highlighted compile error in a class and
fix it, IDEA will still highlight the code as red for a good 15 seconds
before it goes away. I find myself sitting and watching IDEA to make sure
the code I typed in is good sometimes.
I have attached a few snapshots into youtrack. I'm happy to provide as many
as you guys need :)
Here is one: