stored procedure slow, thoughts?

exec NIC_ENTERPRISE_PatientActivityLogSearch  @lUser  = 208551,

                                                @SDate                = '2013-07-22 00:00:00.000' ,

                                                @EDate                = '2013-07-22 23:59:59.777' ,

                                                @lEnterprise  = 2674

It took 1 min in rush time and 15 seconds after 4:30 p.m

k