diff --git a/app/models/group.rb b/app/models/group.rb
index 6810623052..54895740bb 100644
--- a/app/models/group.rb
+++ b/app/models/group.rb
@@ -91,19 +91,22 @@ def shared_namespace_metadata_keys(namespace)
     metadata_fields
   end
 
-  def aggregated_samples_count
+  def aggregated_samples_count # rubocop:disable Metrics/AbcSize
     aggregated_samples_count = samples_count
 
     return aggregated_samples_count unless shared_namespaces.any?
 
-    shared_projects_ids = []
-    shared_groups.self_and_descendants.where(type: [Namespaces::ProjectNamespace.sti_name]).where.not(id: self_and_descendants_of_type([Namespaces::ProjectNamespace.sti_name]).ids).each do |shared_project_namespace|
-      aggregated_samples_count += shared_project_namespace.project.samples.size
-      shared_projects_ids.push(shared_project_namespace.id)
+    projects_ids = []
+    shared_groups.self_and_descendants.where(type: [Namespaces::ProjectNamespace.sti_name])
+                 .where.not(id: self_and_descendants_of_type([Namespaces::ProjectNamespace.sti_name]).ids)
+                 .find_each do |project_namespace|
+      aggregated_samples_count += project_namespace.project.samples.size
+      projects_ids.push(project_namespace.id)
     end
 
-    shared_project_namespaces.where.not(id: self_and_descendants_of_type([Namespaces::ProjectNamespace.sti_name]).ids).each do |shared_project_namespace|
-      aggregated_samples_count += shared_project_namespace.project.samples.size if not shared_projects_ids.include?(shared_project_namespace.id)
+    shared_project_namespaces.where.not(id: self_and_descendants_of_type([Namespaces::ProjectNamespace.sti_name]).ids)
+                             .find_each do |project_namespace|
+      aggregated_samples_count += project_namespace.project.samples.size if projects_ids.exclude?(project_namespace.id)
     end
     aggregated_samples_count
   end