diff --git a/common/JackNetDriver.cpp b/common/JackNetDriver.cpp
index 46f70feb..70dc2a10 100644
--- a/common/JackNetDriver.cpp
+++ b/common/JackNetDriver.cpp
@@ -214,7 +214,7 @@ namespace Jack
         plot_name = string(fParams.fName);
         plot_name += string("_slave");
         plot_name += (fEngineControl->fSyncMode) ? string("_sync") : string("_async");
-        plot_name +=  string("_latency");
+        plot_name += string("_latency");
         fNetTimeMon = new JackGnuPlotMonitor<float>(128, 5, plot_name);
         string net_time_mon_fields[] =
         {
@@ -280,14 +280,17 @@ namespace Jack
         jack_latency_range_t input_range;
         jack_latency_range_t output_range;
         jack_latency_range_t monitor_range;
-
+     
         for (int i = 0; i < fCaptureChannels; i++) {
-            input_range.max = input_range.min = 0;
+            input_range.max = input_range.min = float(fParams.fNetworkLatency * fEngineControl->fBufferSize) / 2.f;
             fGraphManager->GetPort(fCapturePortList[i])->SetLatencyRange(JackCaptureLatency, &input_range);
         }
 
         for (int i = 0; i < fPlaybackChannels; i++) {
-            output_range.max = output_range.min = 0;
+            output_range.max = output_range.min = float(fParams.fNetworkLatency * fEngineControl->fBufferSize) / 2.f;
+            if (!fEngineControl->fSyncMode) {
+                output_range.max = output_range.min += fEngineControl->fBufferSize;
+            }
             fGraphManager->GetPort(fPlaybackPortList[i])->SetLatencyRange(JackPlaybackLatency, &output_range);
             if (fWithMonitorPorts) {
                 monitor_range.min = monitor_range.max = 0;
@@ -377,6 +380,7 @@ namespace Jack
             jack_log("JackNetDriver::AllocPorts() fMidiPlaybackPortList[%d] midi_port_index = %ld fPortLatency = %ld", midi_port_index, port_index, port->GetLatency());
         }
 
+        UpdateLatencies();
         return 0;
     }
 
diff --git a/common/JackNetManager.cpp b/common/JackNetManager.cpp
index 555cf690..d2fb311c 100644
--- a/common/JackNetManager.cpp
+++ b/common/JackNetManager.cpp
@@ -395,17 +395,30 @@ namespace Jack
         JackNetMaster* obj = static_cast<JackNetMaster*>(arg);
         jack_nframes_t port_latency = jack_get_buffer_size(obj->fClient);
         jack_latency_range_t range;
-        int i;
-    
+        
         //audio
-        for (i = 0; i < obj->fParams.fReturnAudioChannels; i++) {
+        for (int i = 0; i < obj->fParams.fSendAudioChannels; i++) {
             //port latency
-            range.min = range.max = obj->fParams.fNetworkLatency * port_latency + ((obj->fParams.fSlaveSyncMode) ? 0 : port_latency);
+            range.min = range.max = float(obj->fParams.fNetworkLatency * port_latency) / 2.f;
+            jack_port_set_latency_range(obj->fAudioCapturePorts[i], JackCaptureLatency, &range);
+        }
+        
+        //audio
+        for (int i = 0; i < obj->fParams.fReturnAudioChannels; i++) {
+            //port latency
+            range.min = range.max = float(obj->fParams.fNetworkLatency * port_latency) / 2.f + ((obj->fParams.fSlaveSyncMode) ? 0 : port_latency);
             jack_port_set_latency_range(obj->fAudioPlaybackPorts[i], JackPlaybackLatency, &range);
         }
-
+        
+        //midi
+        for (int i = 0; i < obj->fParams.fSendMidiChannels; i++) {
+            //port latency
+            range.min = range.max = float(obj->fParams.fNetworkLatency * port_latency) / 2.f;
+            jack_port_set_latency_range(obj->fMidiCapturePorts[i], JackCaptureLatency, &range);
+        }
+    
         //midi
-        for (i = 0; i < obj->fParams.fReturnMidiChannels; i++) {
+        for (int i = 0; i < obj->fParams.fReturnMidiChannels; i++) {
             //port latency
             range.min = range.max = obj->fParams.fNetworkLatency * port_latency + ((obj->fParams.fSlaveSyncMode) ? 0 : port_latency);
             jack_port_set_latency_range(obj->fMidiPlaybackPorts[i], JackPlaybackLatency, &range);
diff --git a/common/JackNetOneDriver.cpp b/common/JackNetOneDriver.cpp
index 4a8b4aec..a7fc083e 100644
--- a/common/JackNetOneDriver.cpp
+++ b/common/JackNetOneDriver.cpp
@@ -1108,7 +1108,7 @@ extern "C"
                                              dont_htonl_floats, always_deadline, jitter_val));
 
             if (driver->Open(period_size, sample_rate, 1, 1, capture_ports, playback_ports,
-                                0, "from_master_", "to_master_", 0, 0) == 0) {
+                                0, "from_master", "to_master", 0, 0) == 0) {
                 return driver;
             } else {
                 delete driver;