diff --git a/pkg/rtc/mediatrack.go b/pkg/rtc/mediatrack.go
index 3c167e0f2..be1436fce 100644
--- a/pkg/rtc/mediatrack.go
+++ b/pkg/rtc/mediatrack.go
@@ -95,6 +95,7 @@ type MediaTrackParams struct {
 	EnableRTPStreamRestartDetection  bool
 	UpdateTrackInfoByVideoSizeChange bool
 	ForceBackupCodecPolicySimulcast  bool
+	MediaBatchIOEnabled              bool
 	OnSubscribedMaxQualityChange     func(
 		trackID livekit.TrackID,
 		trackInfo *livekit.TrackInfo,
@@ -272,6 +273,18 @@ func (t *MediaTrack) ToProto() *livekit.TrackInfo {
 	return t.MediaTrackReceiver.TrackInfoClone()
 }
 
+func (t *MediaTrack) getReceiverLBThreshold() int {
+	// With batch IO the send syscall moves to the BatchConn flush goroutine, so WriteRTP only
+	// translates the packet and enqueues it: ~3.3us per downtrack, against ~26us when the send runs
+	// inline. The last subscriber of 300 subscribers at a serial forwarder is enqueued ~1ms
+	// after the first.
+	if t.params.MediaBatchIOEnabled {
+		return 300
+	}
+
+	return 20
+}
+
 // AddReceiver adds a new RTP receiver to the track, returns true when receiver represents a new codec
 // and if a receiver was added successfully
 func (t *MediaTrack) AddReceiver(receiver *webrtc.RTPReceiver, track sfu.TrackRemote, mid string) (bool, bool) {
@@ -401,7 +414,7 @@ func (t *MediaTrack) AddReceiver(receiver *webrtc.RTPReceiver, track sfu.TrackRe
 			t.params.VideoConfig.StreamTrackerManager,
 			sfu.WithPliThrottleConfig(t.params.PLIThrottleConfig),
 			sfu.WithAudioConfig(t.params.AudioConfig),
-			sfu.WithLoadBalanceThreshold(20),
+			sfu.WithLoadBalanceThreshold(t.getReceiverLBThreshold()),
 			sfu.WithForwardStats(t.params.ForwardStats),
 			sfu.WithEnableRTPStreamRestartDetection(t.params.EnableRTPStreamRestartDetection),
 		)
diff --git a/pkg/rtc/participant.go b/pkg/rtc/participant.go
index b0a663f27..a63529fb5 100644
--- a/pkg/rtc/participant.go
+++ b/pkg/rtc/participant.go
@@ -241,6 +241,7 @@ type ParticipantParams struct {
 	MigrationWaitDuration             time.Duration
 	ExcludeIPv6LocalCandidates        bool
 	EnableWarp                        bool
+	MediaBatchIOEnabled               bool
 }
 
 type ParticipantImpl struct {
@@ -3573,6 +3574,7 @@ func (p *ParticipantImpl) addMediaTrack(signalCid string, ti *livekit.TrackInfo)
 		EnableRTPStreamRestartDetection:  p.params.EnableRTPStreamRestartDetection,
 		UpdateTrackInfoByVideoSizeChange: p.params.UseOneShotSignallingMode,
 		ForceBackupCodecPolicySimulcast:  p.params.ForceBackupCodecPolicySimulcast,
+		MediaBatchIOEnabled:              p.params.MediaBatchIOEnabled,
 		OnSubscribedMaxQualityChange:     p.onSubscribedMaxQualityChange,
 		OnSubscribedAudioCodecChange:     p.onSubscribedAudioCodecChange,
 	}, ti)
diff --git a/pkg/service/roommanager.go b/pkg/service/roommanager.go
index 5aace9845..b667344f3 100644
--- a/pkg/service/roommanager.go
+++ b/pkg/service/roommanager.go
@@ -543,6 +543,9 @@ func (r *RoomManager) StartSession(
 		EnableParticipantDataBlob:         r.config.EnableParticipantDataBlob,
 		EnableRTPStreamRestartDetection:   r.config.RTC.EnableRTPStreamRestartDetection,
 		EnableWarp:                        enableWarp,
+		MediaBatchIOEnabled: r.config.RTC.BatchIO.BatchSize > 0 &&
+			(r.config.RTC.ICEPortRangeStart == 0 || r.config.RTC.ICEPortRangeEnd == 0) &&
+			r.config.RTC.UDPPort.Valid(),
 	})
 	if err != nil {
 		prometheus.IncrementParticipantRtcCanceled(1, enableWarp, pi.Client.GetSdk())