diff --git a/frontend/components/bc/BcAccordion.vue b/frontend/components/bc/BcAccordion.vue
index aed38db72..a6c8dfb4b 100644
--- a/frontend/components/bc/BcAccordion.vue
+++ b/frontend/components/bc/BcAccordion.vue
@@ -4,6 +4,7 @@ import { FontAwesomeIcon } from '@fortawesome/vue-fontawesome'
 
 const props = defineProps<{
   infoCopy?: string,
+  item?: T,
   items?: T[],
   open?: boolean,
 }>()
@@ -56,17 +57,22 @@ const copyText = async () => {
     </summary>
     <BcCard class="bc-accordion__content">
       <ul
+        v-if="items?.length"
         :id="idList"
         class="bc-accordion-list"
       >
         <li
-          v-for="(item, index) in items"
-          :key="`${index}-${item}`"
-          class="bc-accordion-list__item"
+          v-for="(element, index) in items"
+          :key="`${index}-${element}`"
+          class="bc-accordion-list__element"
         >
-          <slot name="item" :item />
+          <slot name="item" :item="element" />
         </li>
       </ul>
+      <slot
+        v-if="item"
+        name="item" :item
+      />
       <template #floating-action-button>
         <BcButtonIcon
           v-if="isSupported"
@@ -118,10 +124,10 @@ const copyText = async () => {
   padding-inline-start: 0;
   display: inline;
 }
-.bc-accordion-list__item {
+.bc-accordion-list__element {
   display: inline;
 }
-.bc-accordion-list__item:not(:last-child)::after {
+.bc-accordion-list__element:not(:last-child)::after {
 content: ', ';
 }
 .bc-accordion__button {
@@ -136,6 +142,7 @@ content: ', ';
   position: absolute;
   bottom: 6px;
   right: 11px;
+  cursor: pointer
 }
 .bc-accordion__button-icon {
   width: .9375rem;
diff --git a/frontend/components/notifications/NotificationsDashboardDialogEntity.vue b/frontend/components/notifications/NotificationsDashboardDialogEntity.vue
index 99fe44a53..b5c502361 100644
--- a/frontend/components/notifications/NotificationsDashboardDialogEntity.vue
+++ b/frontend/components/notifications/NotificationsDashboardDialogEntity.vue
@@ -3,6 +3,7 @@ import { FontAwesomeIcon } from '@fortawesome/vue-fontawesome'
 import {
   faAlarmSnooze,
   faArrowsRotate,
+  faChartLineUp,
   faCube,
   faFileSignature,
   faGlobe,
@@ -280,6 +281,29 @@ const formatValueWei = (value: string) => {
           -->
         </template>
       </BcAccordion>
+      <BcAccordion
+        v-if="details?.group_efficiency_below"
+        :item="details?.group_efficiency_below"
+      >
+        <template #headingIcon>
+          <FontAwesomeIcon
+            :icon="faChartLineUp"
+            class="notifications-dashboard-dialog-entity__icon__red"
+          />
+        </template>
+        <template #heading>
+          {{ $t('notifications.dashboards.dialog.entity.group_efficiency.heading') }}
+        </template>
+        <template #item="{ item: groupEfficiencyBelow }">
+          {{ details?.group_name }}
+          (<BcLink :to="`/dashboard/${props?.dashboard_id}`">
+            {{ details?.dashboard_name }}
+          </BcLink>)
+          {{ $t('notifications.dashboards.dialog.entity.group_efficiency_text', {
+            percentage: formatFractionToPercent(groupEfficiencyBelow),
+          }) }}
+        </template>
+      </BcAccordion>
       <BcAccordion
         v-if="details?.validator_offline_reminder?.length"
         :items="details?.validator_offline_reminder"
diff --git a/frontend/components/notifications/NotificationsDashboardsTable.vue b/frontend/components/notifications/NotificationsDashboardsTable.vue
index 8f91e6c0a..8c846f496 100644
--- a/frontend/components/notifications/NotificationsDashboardsTable.vue
+++ b/frontend/components/notifications/NotificationsDashboardsTable.vue
@@ -44,10 +44,8 @@ const mapEventtypeToText = (eventType: NotificationDashboardsTableRow['event_typ
   switch (eventType) {
     case 'attestation_missed':
       return $t('notifications.dashboards.event_type.attestation_missed')
-    case 'group_offline':
-      return $t('notifications.dashboards.event_type.group_offline')
-    case 'group_online':
-      return $t('notifications.dashboards.event_type.group_online')
+    case 'group_efficiency_below':
+      return $t('notifications.dashboards.event_type.group_efficiency_below')
     case 'incoming_tx':
       return $t('notifications.dashboards.event_type.incoming_tx')
     case 'max_collateral':
diff --git a/frontend/components/notifications/management/NotificationsManagementDashboards.vue b/frontend/components/notifications/management/NotificationsManagementDashboards.vue
index 0af763679..2706aa34c 100644
--- a/frontend/components/notifications/management/NotificationsManagementDashboards.vue
+++ b/frontend/components/notifications/management/NotificationsManagementDashboards.vue
@@ -103,9 +103,6 @@ const wrappedDashboards: ComputedRef<
     if (settingsValidatorDashboard.is_validator_offline_subscribed) {
       result.push($t('notifications.subscriptions.validators.validator_is_offline.label'))
     }
-    if (settingsValidatorDashboard.is_group_offline_subscribed) {
-      result.push($t('notifications.subscriptions.validators.group_is_offline.label'))
-    }
     if (settingsValidatorDashboard.is_attestations_missed_subscribed) {
       result.push($t('notifications.subscriptions.validators.attestation_missed.label'))
     }
@@ -127,12 +124,12 @@ const wrappedDashboards: ComputedRef<
     if (settingsValidatorDashboard.is_min_collateral_subscribed) {
       result.push($t('notifications.subscriptions.validators.min_collateral_reached.label'))
     }
+    if (settingsValidatorDashboard.is_group_efficiency_below_subscribed) {
+      result.push($t('notifications.subscriptions.accounts.group_efficiency.label'))
+    }
     if (settingsValidatorDashboard.is_max_collateral_subscribed) {
       result.push($t('notifications.subscriptions.validators.max_collateral_reached.label'))
     }
-    if (settingsValidatorDashboard.is_real_time_mode_enabled) {
-      result.push($t('notifications.subscriptions.validators.real_time_mode.label'))
-    }
     return result
   }
 })
diff --git a/frontend/components/notifications/management/NotificationsManagementSubscriptionDialog.vue b/frontend/components/notifications/management/NotificationsManagementSubscriptionDialog.vue
index e1f1a312e..2cebb69c7 100644
--- a/frontend/components/notifications/management/NotificationsManagementSubscriptionDialog.vue
+++ b/frontend/components/notifications/management/NotificationsManagementSubscriptionDialog.vue
@@ -10,6 +10,10 @@ const {
   secondsPerEpoch,
 } = useNetworkStore()
 
+const { user } = useUserStore()
+const hasPremiumPerkGroupEfficiency = computed(
+  () => user.value?.premium_perks.notifications_validator_dashboard_group_efficiency,
+)
 function closeDialog(): void {
   dialogRef?.value.close()
 }
@@ -17,10 +21,9 @@ function closeDialog(): void {
 const checkboxes = ref({
   is_attestations_missed_subscribed: props.value?.is_attestations_missed_subscribed ?? false,
   is_block_proposal_subscribed: props.value?.is_block_proposal_subscribed ?? false,
-  is_group_offline_subscribed: props.value?.is_group_offline_subscribed ?? false,
+  is_group_efficiency_below_subscribed: props.value?.is_group_efficiency_below_subscribed ?? false,
   is_max_collateral_subscribed: props.value?.is_max_collateral_subscribed ?? false,
   is_min_collateral_subscribed: props.value?.is_min_collateral_subscribed ?? false,
-  is_real_time_mode_enabled: props.value?.is_real_time_mode_enabled ?? false,
   is_slashed_subscribed: props.value?.is_slashed_subscribed ?? false,
   is_sync_subscribed: props.value?.is_sync_subscribed ?? false,
   is_upcoming_block_proposal_subscribed: props.value?.is_upcoming_block_proposal_subscribed ?? false,
@@ -28,7 +31,7 @@ const checkboxes = ref({
   is_withdrawal_processed_subscribed: props.value?.is_withdrawal_processed_subscribed ?? false,
 })
 const thresholds = ref({
-  group_offline_threshold: formatFraction(props.value?.group_offline_threshold ?? 0),
+  group_efficiency_below_threshold: formatFraction(props.value?.group_efficiency_below_threshold ?? 0),
   max_collateral_threshold: formatFraction(props.value?.max_collateral_threshold ?? 0),
   min_collateral_threshold: formatFraction(props.value?.min_collateral_threshold ?? 0),
 })
@@ -43,7 +46,7 @@ watchDebounced([
 ], () => {
   emit('change-settings', {
     ...checkboxes.value,
-    group_offline_threshold: Number(formatToFraction(thresholds.value.group_offline_threshold)),
+    group_efficiency_below_threshold: Number(formatToFraction(thresholds.value.group_efficiency_below_threshold)),
     max_collateral_threshold: Number(formatToFraction(thresholds.value.max_collateral_threshold)),
     min_collateral_threshold: Number(formatToFraction(thresholds.value.min_collateral_threshold)),
   })
@@ -118,6 +121,14 @@ watch(hasAllEvents, () => {
           v-model:checkbox="checkboxes.is_slashed_subscribed"
           :label="$t('notifications.subscriptions.validators.validator_got_slashed.label')"
         />
+        <BcSettingsRow
+          v-model:checkbox="checkboxes.is_group_efficiency_below_subscribed"
+          v-model:input="thresholds.group_efficiency_below_threshold"
+          has-unit
+          :info="$t('notifications.subscriptions.validators.group_efficiency.info', { percentage: thresholds.group_efficiency_below_threshold })"
+          :label="$t('notifications.subscriptions.validators.group_efficiency.label')"
+          :has-premium-gem="hasPremiumPerkGroupEfficiency"
+        />
         <BcSettingsRow
           v-model:checkbox="checkboxes.is_min_collateral_subscribed"
           v-model:input="thresholds.min_collateral_threshold"
diff --git a/frontend/components/playground/PlaygroundDialog.vue b/frontend/components/playground/PlaygroundDialog.vue
index a5746f24a..b2e5f89c6 100644
--- a/frontend/components/playground/PlaygroundDialog.vue
+++ b/frontend/components/playground/PlaygroundDialog.vue
@@ -31,13 +31,12 @@ const openQuestion = (yesLabel?: string, noLabel?: string) => {
 }
 
 const validatorSub: NotificationSettingsValidatorDashboard = {
-  group_offline_threshold: 0, // means "deactivated/unchecked"
+  group_efficiency_below_threshold: 0,
   is_attestations_missed_subscribed: true,
   is_block_proposal_subscribed: true,
-  is_group_offline_subscribed: true,
+  is_group_efficiency_below_subscribed: true,
   is_max_collateral_subscribed: false,
   is_min_collateral_subscribed: false,
-  is_real_time_mode_enabled: false,
   is_slashed_subscribed: false,
   is_sync_subscribed: true,
   is_upcoming_block_proposal_subscribed: false,
diff --git a/frontend/composables/notifications/useNotificationsManagementDashboards.ts b/frontend/composables/notifications/useNotificationsManagementDashboards.ts
index a27fbf32d..cb4b0b799 100644
--- a/frontend/composables/notifications/useNotificationsManagementDashboards.ts
+++ b/frontend/composables/notifications/useNotificationsManagementDashboards.ts
@@ -83,13 +83,12 @@ export function useNotificationsManagementDashboards() {
       return
     }
     const accountDashboarSettings = settings as NotificationSettingsValidatorDashboard
-    accountDashboarSettings.group_offline_threshold = 0
+    accountDashboarSettings.group_efficiency_below_threshold = 0
     accountDashboarSettings.is_attestations_missed_subscribed = false
     accountDashboarSettings.is_block_proposal_subscribed = false
-    accountDashboarSettings.is_group_offline_subscribed = false
+    accountDashboarSettings.is_group_efficiency_below_subscribed = false
     accountDashboarSettings.is_max_collateral_subscribed = false
     accountDashboarSettings.is_min_collateral_subscribed = false
-    accountDashboarSettings.is_real_time_mode_enabled = false
     accountDashboarSettings.is_slashed_subscribed = false
     accountDashboarSettings.is_sync_subscribed = false
     accountDashboarSettings.is_upcoming_block_proposal_subscribed = false
diff --git a/frontend/locales/en.json b/frontend/locales/en.json
index 66a5f0ec2..f2256ef24 100644
--- a/frontend/locales/en.json
+++ b/frontend/locales/en.json
@@ -616,6 +616,8 @@
           },
         "entity": {
           "attestation_missed":"Attestation missed",
+          "group_efficiency": "Group efficiency ",
+          "group_efficiency_text": "efficiency below {percentage}",
           "max_collateral":"Maximum collateral reached",
           "min_collateral":"Minimum collateral reached",
           "proposal_done": "Proposal done",
@@ -650,8 +652,7 @@
       },
       "event_type": {
         "attestation_missed": "Attestation missed",
-        "group_offline": "Group offline",
-        "group_online": "Group online",
+        "group_efficiency_below": "Low group efficiency",
         "incoming_tx": "Incoming Tx.",
         "max_collateral": "Max. collateral",
         "min_collateral": "Min. collateral",
@@ -814,6 +815,10 @@
         "erc1155_token_transfers": {
           "label": "ERC1155 token transfers"
         },
+        "group_efficiency": {
+          "info": "efficiency below {percentage}",
+          "label": "Group efficiency"
+        },
         "ignore_spam_transactions": {
           "hint": [
             "Ignores",
@@ -844,6 +849,10 @@
           "label": "Block proposal (missed & success)"
         },
         "explanation": "All notifications are sent after network finality (~20min).",
+        "group_efficiency": {
+          "info": "Notifies you if your group's efficiency falls below {percentage}% in any given epoch",
+          "label": "Group efficiency below"
+        },
         "max_collateral_reached": {
           "label": "Max collateral reached"
         },