diff --git a/cli/CmdRunner.go b/cli/CmdRunner.go
index 77668279..78984ea5 100644
--- a/cli/CmdRunner.go
+++ b/cli/CmdRunner.go
@@ -1147,9 +1147,6 @@ func (rt *CmdRunner) executeNetInfo(cc *CommandContext, cmd *NetInfoCmd) {
 		if cmd.Commit != nil {
 			netinfo.Commit = *cmd.Commit
 		}
-		if cmd.Real != nil {
-			netinfo.Real = cmd.Real.Yes != nil
-		}
 		sim.SetNetworkInfo(netinfo)
 	})
 }
diff --git a/cli/README.md b/cli/README.md
index c60ca7cd..493caad8 100644
--- a/cli/README.md
+++ b/cli/README.md
@@ -498,26 +498,21 @@ Done
 Set default network and nodes info.
 
 ```shell
-netinfo [version "<string>"] [commit "<string>"] [real y|n]
+netinfo [version "<string>"] [commit "<string>"]
 ```
 
-Sets information about OpenThread version and commit used for simulation nodes, as well as whether nodes are real 
-or simulated. This default information is then shown in the GUI, whenever a node is not selected. When a node is 
+Sets information about OpenThread version and commit used for simulation nodes. This default information is then 
+shown in the GUI, whenever a node is not selected. When a node is 
 selected, the node-specific version/commit information will be used instead.
 
 In the GUI, when the version/commit message is clicked, a web browser tab will be opened with the Github code for 
-the particular version/commit. 
-
-NOTE: setting `real` enabled (y) will disable some of the GUI controls of the simulation, such as speed/pause. The 
-`real` setting remains as set by this command and is not impacted by selecting nodes in the GUI.
+the particular OpenThread version/commit. 
 
 ```bash
 > netinfo version "Latest"
 Done
 > netinfo version "Latest" commit "a1816c1"
 Done
-> netinfo real y
-Done
 > netinfo version "please select a node and then click this text to see the node's code." commit ""
 Done
 ```
diff --git a/cli/ast.go b/cli/ast.go
index aaafbf30..a5629ff7 100644
--- a/cli/ast.go
+++ b/cli/ast.go
@@ -178,10 +178,9 @@ type PingCmd struct {
 
 // noinspection GoVetStructTag
 type NetInfoCmd struct {
-	Cmd     struct{}     `"netinfo" (`         //nolint
-	Version *string      `  "version" @String` //nolint
-	Commit  *string      `| "commit" @String`  //nolint
-	Real    *YesOrNoFlag `| "real" @@ )+`      //nolint
+	Cmd     struct{} `"netinfo" (`           //nolint
+	Version *string  `  "version" @String`   //nolint
+	Commit  *string  `| "commit" @String )+` //nolint
 }
 
 // noinspection GoVetStructTag
diff --git a/dispatcher/dispatcher.go b/dispatcher/dispatcher.go
index 80cbb222..3d658613 100644
--- a/dispatcher/dispatcher.go
+++ b/dispatcher/dispatcher.go
@@ -128,7 +128,7 @@ type Dispatcher struct {
 }
 
 func NewDispatcher(ctx *progctx.ProgCtx, cfg *Config, cbHandler CallbackHandler) *Dispatcher {
-	logger.AssertTrue(!cfg.Real || cfg.Speed == 1)
+	logger.AssertTrue(!cfg.Realtime || cfg.Speed == 1)
 	var err error
 	ln, unixSocketFile := newUnixSocket(cfg.SimulationId)
 	vis := visualize.NewNopVisualizer()
@@ -497,13 +497,7 @@ func (d *Dispatcher) processNextEvent(simSpeed float64) bool {
 			}
 			time.Sleep(sleepTime)
 
-			if d.cfg.Real {
-				curTime := d.speedStartTime + uint64(float64(time.Since(d.speedStartRealTime)/time.Microsecond)*simSpeed)
-				if curTime > d.pauseTime {
-					curTime = d.pauseTime
-				}
-				d.advanceTime(curTime)
-			} else if time.Since(d.lastVizTime) >= d.cfg.VizUpdateTime {
+			if time.Since(d.lastVizTime) >= d.cfg.VizUpdateTime {
 				curTime := d.speedStartTime + uint64(float64(time.Since(d.speedStartRealTime)/time.Microsecond)*simSpeed)
 				if curTime > d.pauseTime {
 					curTime = d.pauseTime
@@ -659,11 +653,6 @@ func (d *Dispatcher) eventsReader() {
 func (d *Dispatcher) advanceNodeTime(node *Node, timestamp uint64, force bool) {
 	logger.AssertNotNil(node)
 
-	if d.cfg.Real {
-		node.CurTime = timestamp
-		return
-	}
-
 	oldTime := node.CurTime
 	if timestamp <= oldTime && !force {
 		// node time was already equal to or newer than the requested timestamp
@@ -808,9 +797,7 @@ func (d *Dispatcher) checkRadioReachable(src *Node, dst *Node) bool {
 		d.radioModel.CheckRadioReachable(src.RadioNode, dst.RadioNode)
 }
 
-func (d *Dispatcher) sendOneRadioFrame(evt *Event,
-	srcnode *Node, dstnode *Node) {
-	logger.AssertFalse(d.cfg.Real)
+func (d *Dispatcher) sendOneRadioFrame(evt *Event, srcnode *Node, dstnode *Node) {
 	logger.AssertTrue(EventTypeRadioCommStart == evt.Type || EventTypeRadioRxDone == evt.Type)
 	logger.AssertTrue(srcnode != dstnode)
 
@@ -843,7 +830,6 @@ func (d *Dispatcher) sendOneRadioFrame(evt *Event,
 }
 
 func (d *Dispatcher) setAlive(nodeid NodeId) {
-	logger.AssertFalse(d.cfg.Real)
 	logger.AssertFalse(d.isDeleted(nodeid))
 	d.aliveNodes[nodeid] = struct{}{}
 }
@@ -863,7 +849,6 @@ func (d *Dispatcher) isDeleted(nodeid NodeId) bool {
 }
 
 func (d *Dispatcher) setSleeping(nodeid NodeId) {
-	logger.AssertFalse(d.cfg.Real)
 	logger.AssertFalse(d.isDeleted(nodeid))
 	delete(d.aliveNodes, nodeid)
 }
@@ -927,7 +912,8 @@ func (d *Dispatcher) handleStatusPush(srcnode *Node, data string) {
 			continue
 		}
 		if sp[0] == "transmit" {
-			d.visStatusPushTransmit(srcnode, sp[1])
+			// 'transmit' status is currently not visualized: This is already done by OTNS based on
+			// radio frames transmitted.
 		} else if sp[0] == "role" {
 			role, err := strconv.Atoi(sp[1])
 			logger.PanicIfError(err)
@@ -1004,7 +990,7 @@ func (d *Dispatcher) handleStatusPush(srcnode *Node, data string) {
 			mode := ParseNodeMode(sp[1])
 			d.vis.SetNodeMode(srcid, mode)
 		} else {
-			logger.Warnf("received unknown status push: %s=%s", sp[0], sp[1])
+			logger.Errorf("received unknown status push: %s=%s", sp[0], sp[1])
 		}
 	}
 }
@@ -1054,75 +1040,6 @@ func (d *Dispatcher) setNodeRloc16(srcid NodeId, rloc16 uint16) {
 	d.vis.SetNodeRloc16(srcid, rloc16)
 }
 
-func (d *Dispatcher) visStatusPushTransmit(srcnode *Node, s string) {
-	var fcf wpan.FrameControl
-
-	// only visualize `transmit` status emitting in real mode because simulation nodes already have radio events visualized
-	if !d.cfg.Real {
-		return
-	}
-
-	parts := strings.Split(s, ",")
-
-	if len(parts) < 3 {
-		logger.Panicf("invalid status push: transmit=%s", s)
-	}
-
-	channel, err := strconv.Atoi(parts[0])
-	logger.PanicIfError(err)
-	fcfval, err := strconv.ParseUint(parts[1], 16, 16)
-	logger.PanicIfError(err)
-	fcf = wpan.FrameControl(fcfval)
-
-	seq, err := strconv.Atoi(parts[2])
-	logger.PanicIfError(err)
-
-	dstAddrMode := fcf.DestAddrMode()
-
-	visInfo := &visualize.MsgVisualizeInfo{
-		Channel:      uint8(channel),
-		FrameControl: fcf,
-		Seq:          uint8(seq),
-	}
-
-	if dstAddrMode == wpan.AddrModeExtended {
-		dstExtend, err := strconv.ParseUint(parts[3], 16, 64)
-		logger.PanicIfError(err)
-
-		visInfo.DstAddrExtended = dstExtend
-
-		dstnode := d.extaddrMap[dstExtend]
-		if dstnode != srcnode && dstnode != nil {
-			d.visSend(srcnode.Id, dstnode.Id, visInfo)
-		} else {
-			d.visSend(srcnode.Id, InvalidNodeId, visInfo)
-		}
-	} else if dstAddrMode == wpan.AddrModeShort {
-		dstShortVal, err := strconv.ParseUint(parts[3], 16, 16)
-		logger.PanicIfError(err)
-
-		dstShort := uint16(dstShortVal)
-		visInfo.DstAddrShort = dstShort
-
-		if dstShort != BroadcastRloc16 {
-			// unicast message should only be dispatched to target node with the rloc16
-			dstnodes := d.rloc16Map[dstShort]
-
-			if len(dstnodes) > 0 {
-				for _, dstnode := range dstnodes {
-					d.visSend(srcnode.Id, dstnode.Id, visInfo)
-				}
-			} else {
-				d.visSend(srcnode.Id, InvalidNodeId, visInfo)
-			}
-		} else {
-			d.vis.Send(srcnode.Id, BroadcastNodeId, visInfo)
-		}
-	} else {
-		d.vis.Send(srcnode.Id, BroadcastNodeId, visInfo)
-	}
-}
-
 func (d *Dispatcher) visSendFrame(srcid NodeId, dstid NodeId, pktframe *wpan.MacFrame, commData RadioCommEventData) {
 	d.visSend(srcid, dstid, &visualize.MsgVisualizeInfo{
 		Channel:         pktframe.Channel,
@@ -1159,9 +1076,6 @@ func (d *Dispatcher) advanceTime(ts uint64) {
 	logger.AssertTrue(d.CurTime <= ts, "%v > %v", d.CurTime, ts)
 	if d.CurTime < ts {
 		d.CurTime = ts
-		if d.cfg.Real {
-			d.syncAllNodes()
-		}
 	}
 
 	if time.Since(d.lastVizTime) >= d.cfg.VizUpdateTime {
diff --git a/dispatcher/dispatcher_config.go b/dispatcher/dispatcher_config.go
index 0d3623ab..5152c16a 100644
--- a/dispatcher/dispatcher_config.go
+++ b/dispatcher/dispatcher_config.go
@@ -35,7 +35,7 @@ import (
 
 type Config struct {
 	Speed             float64
-	Real              bool
+	Realtime          bool
 	DumpPackets       bool
 	PcapEnabled       bool
 	PcapFrameType     pcap.FrameType
@@ -49,7 +49,7 @@ type Config struct {
 func DefaultConfig() *Config {
 	return &Config{
 		Speed:             1,
-		Real:              false,
+		Realtime:          false,
 		DumpPackets:       false,
 		PcapEnabled:       true,
 		PcapFrameType:     pcap.FrameTypeWpan,
diff --git a/otns_main/otns_main.go b/otns_main/otns_main.go
index 0d4c287e..4a760e43 100644
--- a/otns_main/otns_main.go
+++ b/otns_main/otns_main.go
@@ -64,7 +64,7 @@ type MainArgs struct {
 	LogFileLevel   string
 	WatchLevel     string
 	OpenWeb        bool
-	Real           bool
+	Realtime       bool
 	ListenAddr     string
 	DispatcherHost string
 	DispatcherPort int
@@ -100,7 +100,7 @@ func parseArgs() {
 	flag.StringVar(&args.LogFileLevel, "logfile", "debug", "set OTNS + node file logging level: trace, debug, info, warn, error, off.")
 	flag.StringVar(&args.WatchLevel, "watch", "off", "set default watch (display) level for new nodes: trace, debug, info, note, warn, error, off.")
 	flag.BoolVar(&args.OpenWeb, "web", true, "open web visualization")
-	flag.BoolVar(&args.Real, "real", false, "use real mode (for real devices - currently NOT SUPPORTED)")
+	flag.BoolVar(&args.Realtime, "realtime", false, "use real-time mode (forced speed=1 and autogo)")
 	flag.StringVar(&args.ListenAddr, "listen", fmt.Sprintf("localhost:%d", InitialDispatcherPort), "specify UDP listen address and port-base")
 	flag.BoolVar(&args.DumpPackets, "dump-packets", false, "dump packets")
 	flag.StringVar(&args.PcapType, "pcap", pcap.FrameTypeWpanStr, "PCAP file type: 'off', 'wpan', or 'wpan-tap' (name is \"current.pcap\")")
@@ -283,7 +283,7 @@ func createSimulation(simId int, ctx *progctx.ProgCtx) (*simulation.Simulation,
 	}
 	simcfg.Speed = speed
 	simcfg.ReadOnly = args.ReadOnly
-	simcfg.Real = args.Real
+	simcfg.Realtime = args.Realtime
 	simcfg.DispatcherHost = args.DispatcherHost
 	simcfg.DispatcherPort = args.DispatcherPort
 	simcfg.DumpPackets = args.DumpPackets
diff --git a/otnstester/OtnsTest.go b/otnstester/OtnsTest.go
index c09726ac..7cc59032 100644
--- a/otnstester/OtnsTest.go
+++ b/otnstester/OtnsTest.go
@@ -336,7 +336,7 @@ func (ot *OtnsTest) visualizeStreamReadRoutine() {
 
 		ot.ExpectTrue(err == nil || ot.visualizeStream.Context().Err() != nil)
 		if err == nil {
-			logger.Warnf("Visualize: %+v", evt)
+			logger.Infof("Visualize: %+v", evt)
 			ot.pendingVisualizeEvents <- evt
 		}
 	}
@@ -367,6 +367,17 @@ func (ot *OtnsTest) ExpectVisualizeAddNode(nodeid NodeId, x int, y int, radioRan
 	})
 }
 
+func (ot *OtnsTest) ExpectVisualizeDeleteNode(nodeid NodeId) {
+	ot.ExpectVisualizeEvent(func(evt *visualize_grpc_pb.VisualizeEvent) bool {
+		delNode := evt.GetDeleteNode()
+		if delNode == nil {
+			return false
+		}
+
+		return delNode.NodeId == int32(nodeid)
+	})
+}
+
 func Instance(t *testing.T) *OtnsTest {
 	if otnsTestSingleton == nil {
 		otnsTestSingleton = NewOtnsTest(t)
@@ -387,7 +398,7 @@ func NewOtnsTest(t *testing.T) *OtnsTest {
 		T:                      t,
 		otnsDone:               make(chan struct{}),
 		pendingOutput:          make(chan string, 1000),
-		pendingVisualizeEvents: make(chan *visualize_grpc_pb.VisualizeEvent, 1000),
+		pendingVisualizeEvents: make(chan *visualize_grpc_pb.VisualizeEvent, 100000),
 	}
 
 	os.Args = append(os.Args, "-log", "debug", "-web=false", "-autogo=false", "-watch", "info")
diff --git a/otnstester/tests/otns_basic_test.go b/otnstester/tests/otns_basic_test.go
index a6e6ed74..3178dae7 100644
--- a/otnstester/tests/otns_basic_test.go
+++ b/otnstester/tests/otns_basic_test.go
@@ -97,7 +97,10 @@ func testDelManyNodes(test *otnstester.OtnsTest) {
 	test.Start("testDelManyNodes")
 
 	for i := 0; i < 32; i++ {
-		test.AddNode("router", (i%6)*100, (i/6)*150)
+		x := (i % 6) * 100
+		y := (i / 6) * 150
+		test.AddNode("router", x, y)
+		test.ExpectVisualizeAddNode(i+1, x, y, DefaultRadioRange)
 	}
 
 	test.Go(time.Second * 10)
@@ -106,6 +109,7 @@ func testDelManyNodes(test *otnstester.OtnsTest) {
 
 	for i := 0; i < 32; i++ {
 		test.DeleteNode(i + 1)
+		test.ExpectVisualizeDeleteNode(i + 1)
 		list = test.ListNodes()
 		test.ExpectEqual(31-i, len(list))
 		test.Go(time.Second * 5)
diff --git a/pylibs/otns/cli/OTNS.py b/pylibs/otns/cli/OTNS.py
index ba2d3949..d8262306 100644
--- a/pylibs/otns/cli/OTNS.py
+++ b/pylibs/otns/cli/OTNS.py
@@ -1082,27 +1082,6 @@ def set_title(self, title: str, x: int = None, y: int = None, font_size: int = N
 
         self._do_command(cmd)
 
-    def set_network_info(self, version: str = None, commit: str = None, real: bool = None) -> None:
-        """
-        Set network info.
-
-        :param version: The OpenThread version.
-        :param commit: The OpenThread commit.
-        :param real: If the network uses real devices.
-        """
-        cmd = 'netinfo'
-
-        if version is not None:
-            cmd += f' version "{version}"'
-
-        if commit is not None:
-            cmd += f' commit "{commit}"'
-
-        if real is not None:
-            cmd += f' real {1 if real else 0}'
-
-        self._do_command(cmd)
-
     def __enter__(self):
         return self
 
diff --git a/pylibs/stress_tests/otns_performance.py b/pylibs/stress_tests/otns_performance.py
index 1462f1e4..4ff3adbb 100755
--- a/pylibs/stress_tests/otns_performance.py
+++ b/pylibs/stress_tests/otns_performance.py
@@ -109,7 +109,7 @@ def run(self):
 
         self.result.fail_if(duration > 60, f'Execution Time ({duration}) > 60s')
         self.result.fail_if(counter['AlarmEvents'] > 900000, f"Too many AlarmEvents: {counter['AlarmEvents']} > 900000")
-        self.result.fail_if(counter['RadioEvents'] > 650000, f"Too many RadioEvents: {counter['RadioEvents']} > 650000")
+        self.result.fail_if(counter['RadioEvents'] > 680000, f"Too many RadioEvents: {counter['RadioEvents']} > 680000")
 
 
 if __name__ == '__main__':
diff --git a/pylibs/unittests/test_basic.py b/pylibs/unittests/test_basic.py
index d7ed7e8e..4bd4c261 100755
--- a/pylibs/unittests/test_basic.py
+++ b/pylibs/unittests/test_basic.py
@@ -808,6 +808,16 @@ def testSaveYamlTopology(self):
         ns.go(125)
         self.assertFormPartitions(1)
 
+    def testRealtimeMode(self):
+        self.tearDown()
+        with OTNS(otns_args=['-log', 'debug', '-realtime']) as ns:
+            ns.add('router')
+            ns.add('router')
+            self.assertEqual(True, ns.autogo)
+            self.assertEqual(1.0, ns.speed)
+            ns.speed = 23
+            self.assertEqual(1.0, ns.speed)
+
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/simulation/simulation.go b/simulation/simulation.go
index 5c68640d..895961a1 100644
--- a/simulation/simulation.go
+++ b/simulation/simulation.go
@@ -71,22 +71,26 @@ func NewSimulation(ctx *progctx.ProgCtx, cfg *Config, dispatcherCfg *dispatcher.
 		ctx:          ctx,
 		cfg:          cfg,
 		nodes:        map[NodeId]*Node{},
-		autoGo:       cfg.AutoGo,
+		autoGo:       cfg.AutoGo || cfg.Realtime,
 		autoGoChange: make(chan bool, 1),
 		networkInfo:  visualize.DefaultNetworkInfo(),
 		nodePlacer:   NewNodeAutoPlacer(),
 		kpiMgr:       NewKpiManager(),
 	}
 	s.SetLogLevel(cfg.LogLevel)
-	s.networkInfo.Real = cfg.Real
+	s.networkInfo.Real = cfg.Realtime
 
 	// start the dispatcher for virtual time
 	if dispatcherCfg == nil {
 		dispatcherCfg = dispatcher.DefaultConfig()
 	}
 
-	dispatcherCfg.Speed = cfg.Speed
-	dispatcherCfg.Real = cfg.Real
+	if cfg.Realtime {
+		dispatcherCfg.Speed = 1.0
+	} else {
+		dispatcherCfg.Speed = cfg.Speed
+	}
+	dispatcherCfg.Realtime = cfg.Realtime
 	dispatcherCfg.DumpPackets = cfg.DumpPackets
 
 	s.d = dispatcher.NewDispatcher(s.ctx, dispatcherCfg, s)
@@ -219,7 +223,7 @@ func (s *Simulation) genNodeId() NodeId {
 func (s *Simulation) Run() {
 	defer logger.Debugf("simulation exit.")
 
-	if s.cfg.AutoGo {
+	if s.autoGo {
 		s.autoGoChange <- true
 	}
 
@@ -264,6 +268,9 @@ func (s *Simulation) AutoGo() bool {
 }
 
 func (s *Simulation) SetAutoGo(isAuto bool) {
+	if s.cfg.Realtime {
+		return
+	}
 	if s.autoGo != isAuto {
 		s.autoGoChange <- isAuto
 		s.autoGo = isAuto
@@ -447,6 +454,9 @@ func (s *Simulation) ShowDemoLegend(x int, y int, title string) {
 }
 
 func (s *Simulation) SetSpeed(speed float64) {
+	if s.cfg.Realtime {
+		speed = 1.0
+	}
 	s.d.SetSpeed(speed)
 }
 
diff --git a/simulation/simulation_config.go b/simulation/simulation_config.go
index d7745a06..e892aa36 100644
--- a/simulation/simulation_config.go
+++ b/simulation/simulation_config.go
@@ -47,7 +47,7 @@ type Config struct {
 	NewNodeConfig    NodeConfig
 	Speed            float64
 	ReadOnly         bool
-	Real             bool
+	Realtime         bool
 	AutoGo           bool
 	DumpPackets      bool
 	DispatcherHost   string
@@ -68,7 +68,7 @@ func DefaultConfig() *Config {
 		NewNodeConfig:    DefaultNodeConfig(),
 		Speed:            1,
 		ReadOnly:         false,
-		Real:             false,
+		Realtime:         false,
 		AutoGo:           true,
 		DumpPackets:      false,
 		DispatcherHost:   "localhost",