diff --git a/src/servers/sapphire_zone/Social/FriendList.h b/src/servers/sapphire_zone/Social/FriendList.h
index 5eb9be07..afa0df2a 100644
--- a/src/servers/sapphire_zone/Social/FriendList.h
+++ b/src/servers/sapphire_zone/Social/FriendList.h
@@ -53,8 +53,8 @@ protected:
    GroupType m_type{ GroupType::FriendList };
    uint32_t m_maxCapacity{ 200 };
    
-   // todo: (urgent) think of a way to only use a single std set, use index based for correlating with data
-   std::set< FriendEntry > m_entries;
+   // todo: profile and evaluate set vs vector approach
+   std::vector< FriendEntry > m_entries;
 
 };
 
diff --git a/src/servers/sapphire_zone/Social/Group.h b/src/servers/sapphire_zone/Social/Group.h
index 7ebe7802..4dcb54f2 100644
--- a/src/servers/sapphire_zone/Social/Group.h
+++ b/src/servers/sapphire_zone/Social/Group.h
@@ -85,7 +85,7 @@ protected:
    uint32_t m_maxRoles{ 50 };
    std::chrono::steady_clock::time_point m_createTime{ std::chrono::steady_clock::now() };
 
-   std::set< uint64_t > m_members;
+   std::vector< uint64_t > m_members;
 
 private: