diff --git a/playbooks/legacy/ipa-tempest-dsvm-partition-bios-ipmi-direct-coreos-src/run.yaml b/playbooks/legacy/ipa-tempest-dsvm-partition-bios-ipmi-direct-coreos-src/run.yaml
index 18ac97466..77fd8b851 100644
--- a/playbooks/legacy/ipa-tempest-dsvm-partition-bios-ipmi-direct-coreos-src/run.yaml
+++ b/playbooks/legacy/ipa-tempest-dsvm-partition-bios-ipmi-direct-coreos-src/run.yaml
@@ -24,11 +24,14 @@
         chdir: '{{ ansible_user_dir }}/workspace'
       environment: '{{ zuul | zuul_legacy_vars }}'
 
+    # NOTE(TheJulia): The CoreOS ramdisk is generally slow to startup,
+    # on the order of 300-500 seconds.
     - shell:
         cmd: |
           cat << 'EOF' >> ironic-extra-vars
             export DEVSTACK_GATE_OS_TEST_TIMEOUT=2400
             export DEVSTACK_GATE_TEMPEST_BAREMETAL_BUILD_TIMEOUT=1800
+            export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_ENGINE=auto"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_SPECS_CPU=2"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_SPECS_RAM=2048"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_RAMDISK_TYPE=coreos"
diff --git a/playbooks/legacy/ipa-tempest-dsvm-partition-bios-ipmi-iscsi-coreos-src/run.yaml b/playbooks/legacy/ipa-tempest-dsvm-partition-bios-ipmi-iscsi-coreos-src/run.yaml
index 120f1c297..6b173fc4c 100644
--- a/playbooks/legacy/ipa-tempest-dsvm-partition-bios-ipmi-iscsi-coreos-src/run.yaml
+++ b/playbooks/legacy/ipa-tempest-dsvm-partition-bios-ipmi-iscsi-coreos-src/run.yaml
@@ -24,11 +24,14 @@
         chdir: '{{ ansible_user_dir }}/workspace'
       environment: '{{ zuul | zuul_legacy_vars }}'
 
+    # NOTE(TheJulia): The CoreOS ramdisk is generally slow to startup,
+    # on the order of 300-500 seconds.
     - shell:
         cmd: |
           cat << 'EOF' >> ironic-extra-vars
             export DEVSTACK_GATE_OS_TEST_TIMEOUT=2400
             export DEVSTACK_GATE_TEMPEST_BAREMETAL_BUILD_TIMEOUT=1800
+            export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_ENGINE=auto"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_SPECS_CPU=2"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_SPECS_RAM=2048"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_RAMDISK_TYPE=coreos"
diff --git a/playbooks/legacy/ipa-tempest-dsvm-wholedisk-bios-ipmi-direct-coreos-src/run.yaml b/playbooks/legacy/ipa-tempest-dsvm-wholedisk-bios-ipmi-direct-coreos-src/run.yaml
index 9920e60d8..827e4356d 100644
--- a/playbooks/legacy/ipa-tempest-dsvm-wholedisk-bios-ipmi-direct-coreos-src/run.yaml
+++ b/playbooks/legacy/ipa-tempest-dsvm-wholedisk-bios-ipmi-direct-coreos-src/run.yaml
@@ -24,11 +24,14 @@
         chdir: '{{ ansible_user_dir }}/workspace'
       environment: '{{ zuul | zuul_legacy_vars }}'
 
+    # NOTE(TheJulia): The CoreOS ramdisk is generally slow to startup,
+    # on the order of 300-500 seconds.
     - shell:
         cmd: |
           cat << 'EOF' >> ironic-extra-vars
             export DEVSTACK_GATE_OS_TEST_TIMEOUT=2400
             export DEVSTACK_GATE_TEMPEST_BAREMETAL_BUILD_TIMEOUT=1800
+            export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_ENGINE=auto"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_SPECS_CPU=2"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_SPECS_RAM=2048"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_RAMDISK_TYPE=coreos"
diff --git a/playbooks/legacy/ipa-tempest-dsvm-wholedisk-bios-ipmi-iscsi-coreos-src/run.yaml b/playbooks/legacy/ipa-tempest-dsvm-wholedisk-bios-ipmi-iscsi-coreos-src/run.yaml
index 94f6e992a..917294e5b 100644
--- a/playbooks/legacy/ipa-tempest-dsvm-wholedisk-bios-ipmi-iscsi-coreos-src/run.yaml
+++ b/playbooks/legacy/ipa-tempest-dsvm-wholedisk-bios-ipmi-iscsi-coreos-src/run.yaml
@@ -24,11 +24,14 @@
         chdir: '{{ ansible_user_dir }}/workspace'
       environment: '{{ zuul | zuul_legacy_vars }}'
 
+    # NOTE(TheJulia): The CoreOS ramdisk is generally slow to startup,
+    # on the order of 300-500 seconds.
     - shell:
         cmd: |
           cat << 'EOF' >> ironic-extra-vars
             export DEVSTACK_GATE_OS_TEST_TIMEOUT=2400
             export DEVSTACK_GATE_TEMPEST_BAREMETAL_BUILD_TIMEOUT=1800
+            export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_ENGINE=auto"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_SPECS_CPU=2"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_VM_SPECS_RAM=2048"
             export DEVSTACK_LOCAL_CONFIG+=$'\n'"IRONIC_RAMDISK_TYPE=coreos"