diff --git a/CHANGES.md b/CHANGES.md
index f35e44fe..af856a57 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -26,6 +26,7 @@ Notable changes between versions.
 #### Azure
 
 * Use `strict` Fedora CoreOS Config (FCC) snippet parsing ([#755](https://github.com/poseidon/typhoon/pull/755))
+* Reduce Calico vxlan interface MTU to maintain performance ([#767](https://github.com/poseidon/typhoon/pull/766))
 
 #### AWS
 
diff --git a/azure/fedora-coreos/kubernetes/bootstrap.tf b/azure/fedora-coreos/kubernetes/bootstrap.tf
index 76391f6e..6e8d6e79 100644
--- a/azure/fedora-coreos/kubernetes/bootstrap.tf
+++ b/azure/fedora-coreos/kubernetes/bootstrap.tf
@@ -10,8 +10,9 @@ module "bootstrap" {
   networking = var.networking
 
   # only effective with Calico networking
+  # we should be able to use 1450 MTU, but in practice, 1410 was needed
   network_encapsulation = "vxlan"
-  network_mtu           = "1450"
+  network_mtu           = "1410"
 
   pod_cidr              = var.pod_cidr
   service_cidr          = var.service_cidr