add nodelay to the the line containing pam_unix.so and pam_faillock.so in
/etc/pam.d/system-auth
e.g.
auth required pam_faillock.so preauth nodelay
auth [success=1 default=bad] pam_unix.so try_first_pass nullok nodelay
auth [default=die] pam_faillock.so authfail nodelay
see also:
man pam_unix