diff --git a/c++/carla-backend/carla_engine.cpp b/c++/carla-backend/carla_engine.cpp
index c60e756..8dbdd46 100644
--- a/c++/carla-backend/carla_engine.cpp
+++ b/c++/carla-backend/carla_engine.cpp
@@ -22,8 +22,7 @@ CARLA_BACKEND_START_NAMESPACE
 
 // -----------------------------------------------------------------------
 
-unsigned int CarlaPlugin::m_count = 0;
-
+unsigned int   CarlaPlugin::m_count = 0;
 unsigned short CarlaEngine::m_maxPluginNumber = 0;
 
 CarlaEngine::CarlaEngine()
diff --git a/c++/carla-backend/dssi.cpp b/c++/carla-backend/dssi.cpp
index bf68a30..68898a3 100644
--- a/c++/carla-backend/dssi.cpp
+++ b/c++/carla-backend/dssi.cpp
@@ -696,6 +696,50 @@ public:
         if (aIns <= 2 && aOuts <= 2 && (aIns == aOuts || aIns == 0 || aOuts == 0))
             m_hints |= PLUGIN_CAN_FORCE_STEREO;
 
+        // check latency
+        {
+            bool hasLatency = false;
+            uint32_t latency = 0;
+
+            for (uint32_t i=0; i < param.count; i++)
+            {
+                if (param.data[i].type == PARAMETER_LATENCY)
+                {
+                    // pre-run so plugin can update latency control-port
+                    float tmpIn[2][aIns];
+                    float tmpOut[2][aOuts];
+
+                    for (j=0; j < aIn.count; j++)
+                    {
+                        tmpIn[j][0] = 0.0f;
+                        tmpIn[j][1] = 0.0f;
+
+                        if (j == 0 || ! h2)
+                            ldescriptor->connect_port(handle, aIn.rindexes[j], tmpIn[j]);
+                    }
+
+                    for (j=0; j < aOut.count; j++)
+                    {
+                        tmpOut[j][0] = 0.0f;
+                        tmpOut[j][1] = 0.0f;
+
+                        if (j == 0 || ! h2)
+                            ldescriptor->connect_port(handle, aOut.rindexes[j], tmpOut[j]);
+                    }
+
+                    ldescriptor->activate(handle);
+                    ldescriptor->run(handle, 2);
+                    ldescriptor->deactivate(handle);
+
+                    latency = rint(paramBuffers[i]);
+                    hasLatency = true;
+                    break;
+                }
+            }
+
+            // TODO - adjust latency now
+        }
+
         reloadPrograms(true);
 
         x_client->activate();
diff --git a/c++/carla-backend/ladspa.cpp b/c++/carla-backend/ladspa.cpp
index 30a3538..2d4868d 100644
--- a/c++/carla-backend/ladspa.cpp
+++ b/c++/carla-backend/ladspa.cpp
@@ -665,6 +665,50 @@ public:
         if (aIns <= 2 && aOuts <= 2 && (aIns == aOuts || aIns == 0 || aOuts == 0))
             m_hints |= PLUGIN_CAN_FORCE_STEREO;
 
+        // check latency
+        {
+            bool hasLatency = false;
+            uint32_t latency = 0;
+
+            for (uint32_t i=0; i < param.count; i++)
+            {
+                if (param.data[i].type == PARAMETER_LATENCY)
+                {
+                    // pre-run so plugin can update latency control-port
+                    float tmpIn[2][aIns];
+                    float tmpOut[2][aOuts];
+
+                    for (j=0; j < aIn.count; j++)
+                    {
+                        tmpIn[j][0] = 0.0f;
+                        tmpIn[j][1] = 0.0f;
+
+                        if (j == 0 || ! h2)
+                            descriptor->connect_port(handle, aIn.rindexes[j], tmpIn[j]);
+                    }
+
+                    for (j=0; j < aOut.count; j++)
+                    {
+                        tmpOut[j][0] = 0.0f;
+                        tmpOut[j][1] = 0.0f;
+
+                        if (j == 0 || ! h2)
+                            descriptor->connect_port(handle, aOut.rindexes[j], tmpOut[j]);
+                    }
+
+                    descriptor->activate(handle);
+                    descriptor->run(handle, 2);
+                    descriptor->deactivate(handle);
+
+                    latency = rint(paramBuffers[i]);
+                    hasLatency = true;
+                    break;
+                }
+            }
+
+            // TODO - adjust latency now
+        }
+
         x_client->activate();
 
         qDebug("LadspaPlugin::reload() - end");
diff --git a/c++/carla-backend/lv2.cpp b/c++/carla-backend/lv2.cpp
index 68ef65f..9388f8e 100644
--- a/c++/carla-backend/lv2.cpp
+++ b/c++/carla-backend/lv2.cpp
@@ -1737,6 +1737,41 @@ public:
                 m_hints |= PLUGIN_CAN_FORCE_STEREO;
         }
 
+        // check latency
+        {
+            bool hasLatency = false;
+            uint32_t latency = 0;
+
+            for (uint32_t i=0; i < param.count; i++)
+            {
+                if (param.data[i].type == PARAMETER_LATENCY)
+                {
+                    // pre-run so plugin can update latency control-port
+                    for (j=0; j < aIn.count; j++)
+                    {
+                        if (j == 0 || ! h2)
+                            descriptor->connect_port(handle, aIn.rindexes[j], nullptr);
+                    }
+
+                    for (j=0; j < aOut.count; j++)
+                    {
+                        if (j == 0 || ! h2)
+                            descriptor->connect_port(handle, aOut.rindexes[j], nullptr);
+                    }
+
+                    descriptor->activate(handle);
+                    descriptor->run(handle, 0);
+                    descriptor->deactivate(handle);
+
+                    latency = rint(paramBuffers[i]);
+                    hasLatency = true;
+                    break;
+                }
+            }
+
+            // TODO - adjust latency now
+        }
+
         reloadPrograms(true);
 
         x_client->activate();
diff --git a/c++/carla-backend/vst.cpp b/c++/carla-backend/vst.cpp
index 2b71a1e..5d42f3f 100644
--- a/c++/carla-backend/vst.cpp
+++ b/c++/carla-backend/vst.cpp
@@ -729,6 +729,13 @@ public:
         if ((aIns == 0 || aIns == 2) && (aOuts == 0 || aOuts == 2))
             m_hints |= PLUGIN_CAN_FORCE_STEREO;
 
+        // check latency
+        {
+            uint32_t latency = effect->initialDelay;
+
+            // TODO - adjust latency now
+        }
+
         reloadPrograms(true);
 
         x_client->activate();