I'm not sure what the cause is as I have not seen a pattern but the cpu just pegs. It could be after a pause in use or in the middle of a period of use. If i do a sample process, it usually stops it momentarily then the cpu pegs again continuously. This makes IDEA pretty much unusable.
It also seems the process name is lost, not sure if that makes a difference.
I attached a couple process samples.
Attachment(s):Sample of (null) selena.txtSample of IntelliJ IDEA.txt