a file change event is triggered at every keystroke in the file!

I'm having some major problem here as I'm trying to use PHPStorm to write coffeescript while 'gulp-watch' which is a file watcher is running.
At every keystroke I type a file watch change is triggered! I know this is a problem with PHPStorm because I tried a different editor and I don't have this problem. In the other editor the file change naturally only gets triggered when I save.

What's going on how can I stop this from happening? In my settings I've already disabled 'save files automatically if application is idle, save files on frame deactivation and use safe write'