diff --git a/charts/hedera-mirror/templates/stackgres/stackgres-cluster.yaml b/charts/hedera-mirror/templates/stackgres/stackgres-cluster.yaml
index c4ba7499ab4..a65021ccf75 100644
--- a/charts/hedera-mirror/templates/stackgres/stackgres-cluster.yaml
+++ b/charts/hedera-mirror/templates/stackgres/stackgres-cluster.yaml
@@ -20,8 +20,9 @@ spec:
       persistentVolume: {{ .Values.stackgres.coordinator.persistentVolume | toYaml | nindent 8 }}
       resources:
         disableResourcesRequestsSplitFromTotal: {{ .Values.stackgres.dedicatedResourcesRequests }}
-      {{- if eq ((.Values.stackgres.coordinator.persistentVolume).storageClass) "zfs" }}
       scheduling:
+        priorityClassName: {{ .Values.stackgres.priorityClassName }}
+        {{- if eq ((.Values.stackgres.coordinator.persistentVolume).storageClass) "zfs" }}
         nodeSelector:
           citus-role: coordinator
           csi-type: zfs
@@ -30,7 +31,7 @@ spec:
             operator: Equal
             value: "true"
             effect: NoSchedule
-      {{- end }}
+        {{- end }}
     sgInstanceProfile: {{ include "hedera-mirror.stackgres" . }}-coordinator
   database: {{ .Values.db.name }}
   nonProductionOptions:
@@ -59,8 +60,9 @@ spec:
       persistentVolume: {{ .Values.stackgres.worker.persistentVolume | toYaml | nindent 8 }}
       resources:
         disableResourcesRequestsSplitFromTotal: {{ .Values.stackgres.dedicatedResourcesRequests }}
-      {{- if eq ((.Values.stackgres.worker.persistentVolume).storageClass) "zfs" }}
       scheduling:
+        priorityClassName: {{ .Values.stackgres.priorityClassName }}
+        {{- if eq ((.Values.stackgres.worker.persistentVolume).storageClass) "zfs" }}
         nodeSelector:
           citus-role: worker
           csi-type: zfs
@@ -69,7 +71,7 @@ spec:
             operator: Equal
             value: "true"
             effect: NoSchedule
-      {{- end }}
+        {{- end }}
     sgInstanceProfile: {{ include "hedera-mirror.stackgres" . }}-worker
   type: citus
 {{- end -}}
diff --git a/charts/hedera-mirror/values-prod.yaml b/charts/hedera-mirror/values-prod.yaml
index edf0408b34c..a026ce99f90 100644
--- a/charts/hedera-mirror/values-prod.yaml
+++ b/charts/hedera-mirror/values-prod.yaml
@@ -158,12 +158,13 @@ stackgres:
     persistentVolume:
       size: 256Gi
       storageClass: zfs
+  priorityClassName: critical
   worker:
     instances: 3
     replicasPerInstance: 1
     resources:
       cpu: 9500m
-      memory: 34Gi
+      memory: 40Gi
       requests:
         containers:
           cluster-controller:
diff --git a/charts/hedera-mirror/values.yaml b/charts/hedera-mirror/values.yaml
index a2609f08ef7..fde2ba85301 100644
--- a/charts/hedera-mirror/values.yaml
+++ b/charts/hedera-mirror/values.yaml
@@ -290,10 +290,10 @@ stackgres:
       max_wal_size: "24GB"
       password_encryption: "scram-sha-256"
       random_page_cost: "1.1"
-      shared_buffers: "9GB"
+      shared_buffers: "7GB"
       wal_init_zero: "off"  # Not needed with ZFS
       wal_recycle: "off"  # Not needed with ZFS
-      work_mem: "16MB"
+      work_mem: "12MB"
     enableMetricsExporter: false
     enablePostgresUtil: true
     instances: 1
@@ -328,6 +328,7 @@ stackgres:
   nameOverride: citus
   podAntiAffinity: true
   postgresVersion: "16.2"
+  priorityClassName: ""
   worker:
     config:
       autovacuum_max_workers: "2"
@@ -344,7 +345,7 @@ stackgres:
       shared_buffers: "12GB"
       wal_init_zero: "off"  # Not needed with ZFS
       wal_recycle: "off"  # Not needed with ZFS
-      work_mem: "16MB"
+      work_mem: "12MB"
     enableMetricsExporter: false
     enablePostgresUtil: true
     instances: 1