diff --git a/addons/note/models/res_users.py b/addons/note/models/res_users.py
index 0623a3d7a8a..a2780f865f9 100644
--- a/addons/note/models/res_users.py
+++ b/addons/note/models/res_users.py
@@ -12,13 +12,13 @@ class Users(models.Model):
     _name = 'res.users'
     _inherit = ['res.users']
 
-    @api.model
-    def create(self, values):
-        user = super(Users, self).create(values)
+    @api.model_create_multi
+    def create(self, vals_list):
+        users = super().create(vals_list)
+        user_group_id = self.env['ir.model.data'].xmlid_to_res_id('base.group_user')
         # for new employee, create his own 5 base note stages
-        if user.has_group('base.group_user'):
-            user._create_note_stages()
-        return user
+        users.filtered_domain([('groups_id', 'in', [user_group_id])])._create_note_stages()
+        return users
 
     @api.model
     def _init_data_user_note_stages(self):
diff --git a/addons/snailmail/models/res_partner.py b/addons/snailmail/models/res_partner.py
index ae50e43c999..c7f40f7b3a8 100644
--- a/addons/snailmail/models/res_partner.py
+++ b/addons/snailmail/models/res_partner.py
@@ -10,16 +10,18 @@ class ResPartner(models.Model):
     _inherit = "res.partner"
 
     def write(self, vals):
-        for id in self.ids:
-            letter_address_vals = {}
-            address_fields = ['street', 'street2', 'city', 'zip', 'state_id', 'country_id']
-            for field in address_fields:
-                if field in vals:
-                    letter_address_vals[field] = vals[field]
+        letter_address_vals = {}
+        address_fields = ['street', 'street2', 'city', 'zip', 'state_id', 'country_id']
+        for field in address_fields:
+            if field in vals:
+                letter_address_vals[field] = vals[field]
 
-            if len(letter_address_vals):
-                letter_ids = self.env['snailmail.letter'].search([('state', 'not in', ['sent', 'canceled']), ('partner_id', '=', id)])
-                letter_ids.write(letter_address_vals)
+        if letter_address_vals:
+            letters = self.env['snailmail.letter'].search([
+                ('state', 'not in', ['sent', 'canceled']),
+                ('partner_id', 'in', self.ids),
+            ])
+            letters.write(letter_address_vals)
 
         return super(ResPartner, self).write(vals)
 
diff --git a/odoo/addons/base/models/res_users.py b/odoo/addons/base/models/res_users.py
index f16cb7eee8d..4d012ad0ee4 100644
--- a/odoo/addons/base/models/res_users.py
+++ b/odoo/addons/base/models/res_users.py
@@ -1271,8 +1271,10 @@ class UsersView(models.Model):
     def write(self, values):
         values = self._remove_reified_groups(values)
         res = super(UsersView, self).write(values)
+        if 'company_ids' not in values:
+            return res
         group_multi_company = self.env.ref('base.group_multi_company', False)
-        if group_multi_company and 'company_ids' in values:
+        if group_multi_company:
             for user in self:
                 if len(user.company_ids) <= 1 and user.id in group_multi_company.users.ids:
                     user.write({'groups_id': [(3, group_multi_company.id)]})