2 seconds is a bit slow. Debouncing with 1 second means it can only run maximum once per second. In reality it won't run us much. Even people who type slow will usually type faster than 1 character per second.
See #30966.
git-svn-id: https://develop.svn.wordpress.org/trunk@33060 602fd350-edb4-49c9-b593-d223f7449a82