diff --git a/computes/templates/computes/instances.html b/computes/templates/computes/instances.html
index 8a41bc96..ca5bb03c 100644
--- a/computes/templates/computes/instances.html
+++ b/computes/templates/computes/instances.html
@@ -87,18 +87,18 @@
                             </em>
                         </td>
                         <td>
-                            {% if instance.proxy.instance.info.0 == 1 %}
+                            {% if instance.info.0 == 1 %}
                                 <span class="text-success">{% trans "Active" %}</span>
                             {% endif %}
-                            {% if instance.proxy.instance.info.0 == 5 %}
+                            {% if instance.info.0 == 5 %}
                                 <span class="text-danger">{% trans "Off" %}</span>
                             {% endif %}
-                            {% if instance.proxy.instance.info.0 == 3 %}
+                            {% if instance.info.0 == 3 %}
                                 <span class="text-warning">{% trans "Suspended" %}</span>
                             {% endif %}
                         </td>
-                        <td>{{ instance.proxy.instance.info.3 }}</td>
-                        <td><p class="text-end">{% widthratio instance.proxy.instance.info.1 1024 1  %} MiB</p></td>
+                        <td>{{ instance.info.3 }}</td>
+                        <td><p class="text-end">{% widthratio instance.info.1 1024 1  %} MiB</p></td>
                         <td class="text-nowrap">
                             {% include 'instance_actions.html' %}
                         </td>
diff --git a/instances/models.py b/instances/models.py
index 91fb4472..0ca07c47 100644
--- a/instances/models.py
+++ b/instances/models.py
@@ -63,6 +63,11 @@ class Instance(models.Model):
     def disks(self) -> list[dict]:
         return self.proxy.get_disk_devices()
 
+    @cached_property
+    def info(self) -> list:
+        """virDomainGetInfo, read once: state, max memory KiB, memory KiB, vCPUs, CPU time"""
+        return self.proxy.instance.info()
+
     @cached_property
     def status(self) -> int:
         return self.proxy.get_status()
diff --git a/instances/templates/allinstances_index_grouped.html b/instances/templates/allinstances_index_grouped.html
index 290abe03..8e9f7f9a 100644
--- a/instances/templates/allinstances_index_grouped.html
+++ b/instances/templates/allinstances_index_grouped.html
@@ -62,9 +62,9 @@
                             </em>
                         </td>
                         <td>
-                            {% if instance.proxy.instance.info.0 == 1 %}<span class="text-success">{% trans "Active" %}</span>{% endif %}
-                            {% if instance.proxy.instance.info.0 == 5 %}<span class="text-danger">{% trans "Off" %}</span>{% endif %}
-                            {% if instance.proxy.instance.info.0 == 3 %}
+                            {% if instance.info.0 == 1 %}<span class="text-success">{% trans "Active" %}</span>{% endif %}
+                            {% if instance.info.0 == 5 %}<span class="text-danger">{% trans "Off" %}</span>{% endif %}
+                            {% if instance.info.0 == 3 %}
                                 <span class="text-warning">{% trans "Suspended" %}</span>
                             {% endif %}
                         </td>
@@ -73,8 +73,8 @@
                             {% if instance.drbd == "Primary/OK" or instance.drbd == "Secondary/OK" %}<span class="text-success">{% else %}<span class="text-danger">{% endif %}{{ instance.drbd }}</span>
                         </td>
                         {% endif %}
-                        <td>{{ instance.proxy.instance.info.3 }}</td>
-                        <td>{{ instance.cur_memory }} MB</td>
+                        <td>{{ instance.info.3 }}</td>
+                        <td>{% widthratio instance.info.2 1024 1 %} MB</td>
                         <td class="text-nowrap">
                             {% include 'instance_actions.html' %}
                         </td>
diff --git a/instances/templates/allinstances_index_nongrouped.html b/instances/templates/allinstances_index_nongrouped.html
index c5b06b66..5a35c243 100644
--- a/instances/templates/allinstances_index_nongrouped.html
+++ b/instances/templates/allinstances_index_nongrouped.html
@@ -40,11 +40,11 @@
                         </td>
                     {% endif %}
                     <td>
-                        {% if instance.proxy.instance.info.0 == 1 %}<span
+                        {% if instance.info.0 == 1 %}<span
                             class="text-success">{% trans "Active" %}</span>{% endif %}
-                        {% if instance.proxy.instance.info.0 == 5 %}<span
+                        {% if instance.info.0 == 5 %}<span
                             class="text-danger">{% trans "Off" %}</span>{% endif %}
-                        {% if instance.proxy.instance.info.0 == 3 %}<span
+                        {% if instance.info.0 == 3 %}<span
                             class="text-warning">{% trans "Suspended" %}</span>{% endif %}
                     </td>
 		    {% if app_settings.VM_DRBD_STATUS == 'True' %}
@@ -52,8 +52,8 @@
 			    {% if instance.drbd == "Primary/OK" or instance.drbd == "Secondary/OK" %}<span class="text-success">{% else %}<span class="text-danger">{% endif %}{{ instance.drbd }}</span>
 		    </td>
 		    {% endif %}
-                    <td>{{ instance.proxy.instance.info.3 }}</td>
-                    <td>{{ instance.cur_memory }} MB</td>
+                    <td>{{ instance.info.3 }}</td>
+                    <td>{% widthratio instance.info.2 1024 1 %} MB</td>
                     <td class="text-nowrap">
                         {% include 'instance_actions.html' %}
                     </td>
diff --git a/instances/templates/instance_actions.html b/instances/templates/instance_actions.html
index f3f24fdc..f1b56e86 100644
--- a/instances/templates/instance_actions.html
+++ b/instances/templates/instance_actions.html
@@ -1,7 +1,7 @@
 {% load i18n %}
 {% load bootstrap_icons %}
 <div class="btn-group" role="group" aria-label="Instance actions">
-    {% if instance.proxy.instance.info.0 == 5 %}
+    {% if instance.info.0 == 5 %}
         {% if instance.is_template %}
             <a href="{% url 'instances:instance' instance.id %}#clone" class="btn btn-sm btn-secondary" title="{% trans "Clone" %}">
                 {% bs_icon 'copy' %}
@@ -21,7 +21,7 @@
             <span>{% bs_icon 'eye-fill' %}</span>
         </button>
     {% endif %}
-    {% if instance.proxy.instance.info.0 == 3 %}
+    {% if instance.info.0 == 3 %}
         <form action="{% url 'instances:resume' instance.id %}" method="post" style="display:inline;">
             {% csrf_token %}
             <button type="submit" class="btn btn-sm btn-secondary" title="{% trans "Resume" %}">
@@ -40,7 +40,7 @@
             <span>{% bs_icon 'eye-fill' %}</span>
         </button>
     {% endif %}
-    {% if instance.proxy.instance.info.0 == 1 %}
+    {% if instance.info.0 == 1 %}
         <button class="btn btn-sm btn-secondary disabled" title="{% trans "Power On" %}" disabled>{% bs_icon 'play-fill' %}</button>
         <form action="{% url 'instances:suspend' instance.id %}" method="post" style="display:inline;">
             {% csrf_token %}
diff --git a/instances/test_list_rpc.py b/instances/test_list_rpc.py
new file mode 100644
index 00000000..f8151c99
--- /dev/null
+++ b/instances/test_list_rpc.py
@@ -0,0 +1,86 @@
+"""Instance lists ask libvirt for a VM's info once per row."""
+
+from types import SimpleNamespace
+from unittest.mock import PropertyMock, patch
+
+from appsettings.models import AppSettings
+from computes.models import Compute
+from django.contrib.auth import get_user_model
+from django.test import TestCase
+from django.urls import reverse
+from instances.models import Instance
+
+# virDomainGetInfo: state, max memory KiB, memory KiB, vCPUs, CPU time
+INFO = [1, 4194304, 2097152, 3, 0]
+
+
+class FakeDomain:
+    # a plain class: Django templates do not call MagicMock attributes
+    def __init__(self):
+        self.info_calls = 0
+        self.xml_calls = 0
+
+    def info(self):
+        self.info_calls += 1
+        return INFO
+
+    def XMLDesc(self, flags=0):
+        self.xml_calls += 1
+        return "<domain><title></title><currentMemory>2097152</currentMemory></domain>"
+
+
+class ListInfoCallTests(TestCase):
+    def setUp(self):
+        self.client.force_login(
+            get_user_model().objects.create_superuser(username="rpc-admin", password="pwd", email="rpc@example.com")
+        )
+        self.compute = Compute.objects.create(name="rpc-compute", hostname="localhost", type=4, login="", password="")
+        Instance.objects.create(compute=self.compute, name="vm-a", uuid="11111111-1111-1111-1111-111111111111")
+        Instance.objects.create(compute=self.compute, name="vm-b", uuid="22222222-2222-2222-2222-222222222222")
+        self.domains = []
+
+    def proxy(self, *args, **kwargs):
+        domain = FakeDomain()
+        self.domains.append(domain)
+        return SimpleNamespace(
+            instance=domain,
+            get_uuid=lambda: "uuid",
+            get_title=lambda: domain.XMLDesc() and "",
+            get_cur_memory=lambda: int(domain.XMLDesc().split(">")[4].split("<")[0]) // 1024,
+        )
+
+    def get(self, url):
+        compute_patches = {"status": True, "cpu_count": 1, "ram_size": 1024, "ram_usage": 0, "cpu_usage": 0}
+        with patch("instances.views.utils.refr"), patch("computes.views.utils.refresh_instance_database"), patch(
+            "instances.models.wvmInstance", side_effect=self.proxy
+        ):
+            patches = [patch.object(Compute, k, new_callable=PropertyMock, return_value=v) for k, v in compute_patches.items()]
+            for p in patches:
+                p.start()
+            try:
+                response = self.client.get(url)
+            finally:
+                for p in patches:
+                    p.stop()
+        self.assertEqual(response.status_code, 200)
+        return response
+
+    def assert_one_info_per_vm(self, response, memory="2048 MB"):
+        self.assertEqual(len(self.domains), 2, "one proxy per VM row")
+        for domain in self.domains:
+            self.assertEqual(domain.info_calls, 1)
+            self.assertEqual(domain.xml_calls, 1, "only the title reads the XML")
+        self.assertContains(response, memory, count=2)
+        self.assertContains(response, "Active")
+
+    def test_nongrouped_index(self):
+        AppSettings.objects.filter(key="VIEW_INSTANCES_LIST_STYLE").update(value="nongrouped")
+        self.assert_one_info_per_vm(self.get(reverse("instances:index")))
+
+    def test_grouped_index(self):
+        AppSettings.objects.filter(key="VIEW_INSTANCES_LIST_STYLE").update(value="grouped")
+        self.assert_one_info_per_vm(self.get(reverse("instances:index")))
+
+    def test_compute_instances(self):
+        # this page shows the maximum memory, as before
+        self.assert_one_info_per_vm(self.get(reverse("instances", args=[self.compute.id])), memory="4096 MiB")