SlowQL

SELECT 
`relationships_relationship`.`id`, 
`relationships_relationship`.`source_id`, 
`relationships_relationship`.`target_user_id`, 
`relationships_relationship`.`target_project_id`, 
`relationships_relationship`.`created_on`, 
`relationships_relationship`.`deleted`    
FROM 
`relationships_relationship` 
INNER JOIN `users_userprofile` ON (`relationships_relationship`.`source_id` = `users_userprofile`.`id`) 
WHERE (`relationships_relationship`.`source_id` IN 
  (SELECT U0.`user_id` FROM `projects_perusertaskcompletion` U0 
  INNER JOIN `content_page` U1 ON (U0.`page_id` = U1.`id`) 
  WHERE (U0.`unchecked_on` IS NULL AND U1.`project_id` = 355 AND U1.`deleted` = False ) 
  GROUP BY U0.`user_id`, U0.`user_id` HAVING COUNT(U0.`page_id`) = 4 ORDER BY NULL) 
  AND `users_userprofile`.`deleted` = False AND `relationships_relationship`.`target_project_id` = 355 ) 
LIMIT 56;