diff --git a/changelog.d/8042.misc b/changelog.d/8042.misc
new file mode 100644
index 0000000000..dbfe98140c
--- /dev/null
+++ b/changelog.d/8042.misc
@@ -0,0 +1 @@
+[Voice Broadcast] Show Live broadcast in the room list only if the feature flag is enabled in the lab
diff --git a/vector/src/main/java/im/vector/app/features/home/room/list/usecase/GetLatestPreviewableEventUseCase.kt b/vector/src/main/java/im/vector/app/features/home/room/list/usecase/GetLatestPreviewableEventUseCase.kt
index 6a50e87562..94f9136a2f 100644
--- a/vector/src/main/java/im/vector/app/features/home/room/list/usecase/GetLatestPreviewableEventUseCase.kt
+++ b/vector/src/main/java/im/vector/app/features/home/room/list/usecase/GetLatestPreviewableEventUseCase.kt
@@ -17,6 +17,7 @@
 package im.vector.app.features.home.room.list.usecase
 
 import im.vector.app.core.di.ActiveSessionHolder
+import im.vector.app.features.settings.VectorPreferences
 import im.vector.app.features.voicebroadcast.isLive
 import im.vector.app.features.voicebroadcast.isVoiceBroadcast
 import im.vector.app.features.voicebroadcast.model.asVoiceBroadcastEvent
@@ -35,14 +36,21 @@ import javax.inject.Inject
 class GetLatestPreviewableEventUseCase @Inject constructor(
         private val sessionHolder: ActiveSessionHolder,
         private val getRoomLiveVoiceBroadcastsUseCase: GetRoomLiveVoiceBroadcastsUseCase,
+        private val vectorPreferences: VectorPreferences,
 ) {
 
     fun execute(roomId: String): TimelineEvent? {
         val room = sessionHolder.getSafeActiveSession()?.getRoom(roomId) ?: return null
         val roomSummary = room.roomSummary() ?: return null
-        return getCallEvent(roomSummary)
-                ?: getLiveVoiceBroadcastEvent(room)
-                ?: getDefaultLatestEvent(room, roomSummary)
+        // FIXME Observing live broadcasts results in many db requests,
+        //  to prevent performances issues, we only enable this mechanism if the voice broadcast flag is enabled
+        return if (vectorPreferences.isVoiceBroadcastEnabled()) {
+            getCallEvent(roomSummary)
+                    ?: getLiveVoiceBroadcastEvent(room)
+                    ?: getDefaultLatestEvent(room, roomSummary)
+        } else {
+            roomSummary.latestPreviewableEvent
+        }
     }
 
     private fun getCallEvent(roomSummary: RoomSummary): TimelineEvent? {
diff --git a/vector/src/main/java/im/vector/app/features/voicebroadcast/listening/usecase/GetLiveVoiceBroadcastChunksUseCase.kt b/vector/src/main/java/im/vector/app/features/voicebroadcast/listening/usecase/GetLiveVoiceBroadcastChunksUseCase.kt
index b2aebd9932..6f7444849a 100644
--- a/vector/src/main/java/im/vector/app/features/voicebroadcast/listening/usecase/GetLiveVoiceBroadcastChunksUseCase.kt
+++ b/vector/src/main/java/im/vector/app/features/voicebroadcast/listening/usecase/GetLiveVoiceBroadcastChunksUseCase.kt
@@ -24,17 +24,15 @@ import im.vector.app.features.voicebroadcast.model.VoiceBroadcastEvent
 import im.vector.app.features.voicebroadcast.model.VoiceBroadcastState
 import im.vector.app.features.voicebroadcast.model.asVoiceBroadcastEvent
 import im.vector.app.features.voicebroadcast.sequence
-import im.vector.app.features.voicebroadcast.usecase.GetVoiceBroadcastStateEventLiveUseCase
+import im.vector.app.features.voicebroadcast.usecase.GetVoiceBroadcastStateEventUseCase
 import im.vector.app.features.voicebroadcast.voiceBroadcastId
 import kotlinx.coroutines.channels.awaitClose
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.callbackFlow
 import kotlinx.coroutines.flow.emptyFlow
-import kotlinx.coroutines.flow.firstOrNull
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.runningReduce
-import kotlinx.coroutines.runBlocking
 import org.matrix.android.sdk.api.session.events.model.RelationType
 import org.matrix.android.sdk.api.session.room.model.message.MessageAudioEvent
 import org.matrix.android.sdk.api.session.room.model.message.asMessageAudioEvent
@@ -48,7 +46,7 @@ import javax.inject.Inject
  */
 class GetLiveVoiceBroadcastChunksUseCase @Inject constructor(
         private val activeSessionHolder: ActiveSessionHolder,
-        private val getVoiceBroadcastEventUseCase: GetVoiceBroadcastStateEventLiveUseCase,
+        private val getVoiceBroadcastEventUseCase: GetVoiceBroadcastStateEventUseCase,
 ) {
 
     fun execute(voiceBroadcast: VoiceBroadcast): Flow<List<MessageAudioEvent>> {
@@ -60,7 +58,7 @@ class GetLiveVoiceBroadcastChunksUseCase @Inject constructor(
         val existingChunks = room.timelineService().getTimelineEventsRelatedTo(RelationType.REFERENCE, voiceBroadcast.voiceBroadcastId)
                 .mapNotNull { timelineEvent -> timelineEvent.root.asMessageAudioEvent().takeIf { it.isVoiceBroadcast() } }
 
-        val voiceBroadcastEvent = runBlocking { getVoiceBroadcastEventUseCase.execute(voiceBroadcast).firstOrNull()?.getOrNull() }
+        val voiceBroadcastEvent = getVoiceBroadcastEventUseCase.execute(voiceBroadcast)
         val voiceBroadcastState = voiceBroadcastEvent?.content?.voiceBroadcastState
 
         return if (voiceBroadcastState == null || voiceBroadcastState == VoiceBroadcastState.STOPPED) {
diff --git a/vector/src/test/java/im/vector/app/features/home/room/list/usecase/GetLatestPreviewableEventUseCaseTest.kt b/vector/src/test/java/im/vector/app/features/home/room/list/usecase/GetLatestPreviewableEventUseCaseTest.kt
index 5d526c783b..f7dd5da30e 100644
--- a/vector/src/test/java/im/vector/app/features/home/room/list/usecase/GetLatestPreviewableEventUseCaseTest.kt
+++ b/vector/src/test/java/im/vector/app/features/home/room/list/usecase/GetLatestPreviewableEventUseCaseTest.kt
@@ -23,6 +23,7 @@ import im.vector.app.features.voicebroadcast.model.asVoiceBroadcastEvent
 import im.vector.app.features.voicebroadcast.usecase.GetRoomLiveVoiceBroadcastsUseCase
 import im.vector.app.test.fakes.FakeActiveSessionHolder
 import im.vector.app.test.fakes.FakeRoom
+import im.vector.app.test.fakes.FakeVectorPreferences
 import io.mockk.every
 import io.mockk.mockk
 import org.amshove.kluent.shouldBe
@@ -46,10 +47,12 @@ internal class GetLatestPreviewableEventUseCaseTest {
     private val fakeSessionHolder = FakeActiveSessionHolder()
     private val fakeRoomSummary = mockk<RoomSummary>()
     private val fakeGetRoomLiveVoiceBroadcastsUseCase = mockk<GetRoomLiveVoiceBroadcastsUseCase>()
+    private val fakeVectorPreferences = FakeVectorPreferences()
 
     private val getLatestPreviewableEventUseCase = GetLatestPreviewableEventUseCase(
             fakeSessionHolder.instance,
             fakeGetRoomLiveVoiceBroadcastsUseCase,
+            fakeVectorPreferences.instance,
     )
 
     @Before
@@ -62,6 +65,7 @@ internal class GetLatestPreviewableEventUseCaseTest {
                 every { eventId } returns firstArg()
             }
         }
+        fakeVectorPreferences.givenIsVoiceBroadcastEnabled(true)
     }
 
     @Test
diff --git a/vector/src/test/java/im/vector/app/test/fakes/FakeVectorPreferences.kt b/vector/src/test/java/im/vector/app/test/fakes/FakeVectorPreferences.kt
index 3d3f415778..7a5831ffed 100644
--- a/vector/src/test/java/im/vector/app/test/fakes/FakeVectorPreferences.kt
+++ b/vector/src/test/java/im/vector/app/test/fakes/FakeVectorPreferences.kt
@@ -85,4 +85,8 @@ class FakeVectorPreferences {
     fun verifySetIpAddressVisibilityInDeviceManagerScreens(isVisible: Boolean) {
         verify { instance.setIpAddressVisibilityInDeviceManagerScreens(isVisible) }
     }
+
+    fun givenIsVoiceBroadcastEnabled(isEnabled: Boolean) {
+        every { instance.isVoiceBroadcastEnabled() } returns isEnabled
+    }
 }