diff --git a/addons/l10n_pe/models/account_move.py b/addons/l10n_pe/models/account_move.py
index 4c0062fdb6f..b763cb2875b 100644
--- a/addons/l10n_pe/models/account_move.py
+++ b/addons/l10n_pe/models/account_move.py
@@ -1,8 +1,23 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 from odoo import models, fields
+from odoo.tools.sql import column_exists, create_column
 
 
 class AccountMoveLine(models.Model):
     _inherit = "account.move.line"
 
     l10n_pe_group_id = fields.Many2one("account.group", related="account_id.group_id", store=True)
+
+    def _auto_init(self):
+        """
+        Create column to stop ORM from computing it himself (too slow)
+        """
+        if not column_exists(self.env.cr, self._table, 'l10n_pe_group_id'):
+            create_column(self.env.cr, self._table, 'l10n_pe_group_id', 'int4')
+            self.env.cr.execute("""
+                UPDATE account_move_line line
+                SET l10n_pe_group_id = account.group_id
+                FROM account_account account
+                WHERE account.id = line.account_id
+            """)
+        return super()._auto_init()