https://support.microsoft.com/en-us/topic/ad-ds-or-ad-lds-responds-slowly-to-complex-ldap-query-that-has-a-deeply-nested-filter-on-a-windows-server-808f5bc9-32bd-259a-e110-c66eec4218c4
Fix an issue in which AD DS or AD LDS responds slowly to a complex LDAP query on a Windows Server 2012 R2, Windows 8.1, Windows Server 2012, Windows 8, Windows...
ad dsldsrespondsslowlycomplex