UBER оптимизация

DECLARE @DATE_START datetime = '20190729 23:59'
DECLARE @DATE_END datetime = '20190731 23:59'

DECLARE @TASKS TABLE(Id uniqueidentifier)

INSERT INTO @TASKS
SELECT Id
FROM [oktell].[dbo].[A_TaskManager_Tasks];
--------------------------------------------------------------------------------------------------------------------
DECLARE @TasksEnumerator CURSOR

SET @TasksEnumerator = CURSOR SCROLL FOR
SELECT TMT.Id, TMT.Name, JoinedTable
FROM [oktell].[dbo].[A_TaskManager_Lists] as TML
JOIN [oktell].[dbo].[A_TaskManager_Tasks] as TMT
    ON  TMT.ListId = TML.Id
WHERE TMT.Id IN (SELECT * FROM @TASKS)

------ОТКРЫВАЕМ КУРСОР-----------------------------------------------------------------------------------------------
DECLARE @sqltext nvarchar(max)

DECLARE @TaskId uniqueidentifier
DECLARE @Name nvarchar(100)
DECLARE @JTable nvarchar(100)
DECLARE @CountAll int

DECLARE @IdTable TABLE(TaskId uniqueidentifier, Name nvarchar(100), JTable nvarchar(100), Contacts int, NewContacts int)

OPEN @TasksEnumerator

FETCH NEXT FROM @TasksEnumerator INTO @TaskId, @Name, @JTable

BEGIN TRY
    WHILE @@FETCH_STATUS = 0
        BEGIN
            FETCH NEXT FROM @TasksEnumerator INTO @TaskId, @Name, @JTable

            DECLARE @CountNew int = 0

            SET @sqltext = 'SELECT @Count = COUNT(*) FROM ' + @JTable
            EXEC SP_EXECUTESQL @sqltext, N'@Count int out', @CountAll out

            INSERT INTO @IdTable VALUES(@TaskId, @Name, @JTable, @CountAll, @CountNew)
        END

    CLOSE @TasksEnumerator
    DEALLOCATE @TasksEnumerator
    END TRY
BEGIN CATCH

END CATCH
------------------------------------------------------------------------------
SELECT [Name] as 'Оператор'
    , Contacts as 'Всего контактов'
    , NewContacts as 'Новые'
    ,(SELECT COUNT(*) FROM [yandextaxi].[dbo].[tbl_processing]  as tp WITH(NOLOCK) WHERE main.TaskId = tp.idtask) as 'В обработке'
    --,(SELECT COUNT(*) from oktell.dbo.A_TaskManager_SubTasks as ST WHERE Main.TaskId = ST.TaskId AND NResult = 1) 'Дозвон успешен'
FROM @IdTable as Main