Editing a large Java file of just under 15000 lines is very slow. Any text insertion / deletion into the file causes CPU spike. If a tab with find or structural search results (around 800 of them) is open, this causes IDEA to become fully unresponsive for several (in my case up to 15) seconds. I'm attaching a CPU snapshot of the latter happening while inserting four characters (an additional constructor parameter) into the file.