It's a great feature to ward off bruteforce but is also annoying because you think you have the wrong password when you can't login.
How to Disable cp hulk for 5 minutes
/usr/local/cpanel/etc/init/stopcphulkd
disable, cphulk, cpanel, login, passwordit, feature, bruteforce, password, cp, hulk, usr, etc, init, stopcphulkd,