Consulta de grupo de disponibilidade AlwaysON muito lenta

Estou executando abaixo do tsql para encontrar os servidores AlwaysON secundários da réplica primária:

set transaction isolation level read uncommitted 
set statistics time, io on
SELECT  
ISNULL(agstates.primary_replica, '') AS [Primary_AG_Server],
dbcs.database_name AS [DatabaseName]
 ,ar.replica_server_name as [Secondary_AG_Servers]

   FROM master.sys.availability_groups AS AG
LEFT OUTER JOIN master.sys.dm_hadr_availability_group_states as agstates
   ON AG.group_id = agstates.group_id
INNER JOIN master.sys.availability_replicas AS AR
   ON AG.group_id = AR.group_id
INNER JOIN master.sys.dm_hadr_availability_replica_states AS arstates
   ON AR.replica_id = arstates.replica_id AND arstates.is_local <> 1 -- is_local is not 1 .. so we get secondary server names
INNER JOIN master.sys.dm_hadr_database_replica_cluster_states AS dbcs
   ON arstates.replica_id = dbcs.replica_id
    group by agstates.primary_replica, dbcs.database_name, ar.replica_server_name
    set statistics time, io off

A consulta acima leva 12 minutos e 38 segundos para ser executada e retorna 34 linhas . Abaixo estão as estatísticas IO e saída de tempo:

SQL Server parse and compile time: 
   CPU time = 0 ms, elapsed time = 0 ms.

 SQL Server Execution Times:
   CPU time = 0 ms,  elapsed time = 0 ms.
SQL Server parse and compile time: 
   CPU time = 10 ms, elapsed time = 10 ms.

 SQL Server Execution Times:
   CPU time = 0 ms,  elapsed time = 0 ms.

 SQL Server Execution Times:
   CPU time = 0 ms,  elapsed time = 0 ms.

(34 row(s) affected)
Table 'Workfile'. Scan count 0, logical reads 0, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
Table 'Worktable'. Scan count 0, logical reads 0, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
Table 'sysguidrefs'. Scan count 0, logical reads 212, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.
Table 'sysclsobjs'. Scan count 1, logical reads 2, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical reads 0, lob read-ahead reads 0.

(1 row(s) affected)

 SQL Server Execution Times:
   CPU time = 1266 ms,  elapsed time = 747852 ms.

Aqui está o link para o plano de execução real .

Qualquer coisa que pode ser feito para torná-lo mais rápido?

Abaixo é do Plan Explorer

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Obrigado !