diff --git a/src/blackcore/simulator.cpp b/src/blackcore/simulator.cpp
index e5eed695f..a97010ba6 100644
--- a/src/blackcore/simulator.cpp
+++ b/src/blackcore/simulator.cpp
@@ -259,6 +259,7 @@ namespace BlackCore
     void ISimulator::reset()
     {
         this->clearAllRemoteAircraftData(); // reset
+        m_averageFps = -1.0;
     }
 
     bool ISimulator::isUpdateAllRemoteAircraft(qint64 currentTimestamp) const
@@ -316,7 +317,7 @@ namespace BlackCore
 
     void ISimulator::injectWeatherGrid(const CWeatherGrid &weatherGrid)
     {
-        Q_UNUSED(weatherGrid);
+        Q_UNUSED(weatherGrid)
     }
 
     void ISimulator::blinkHighlightedAircraft()
@@ -350,8 +351,8 @@ namespace BlackCore
 
     bool ISimulator::requestElevation(const ICoordinateGeodetic &reference, const CCallsign &callsign)
     {
-        Q_UNUSED(reference);
-        Q_UNUSED(callsign);
+        Q_UNUSED(reference)
+        Q_UNUSED(callsign)
         return false;
     }
 
@@ -361,7 +362,7 @@ namespace BlackCore
 
         ISimulationEnvironmentProvider::rememberGroundElevation(callsign, plane); // in simulator
         const int updated = CRemoteAircraftAware::updateAircraftGroundElevation(callsign, plane, CAircraftSituation::FromProvider);
-        Q_UNUSED(updated);
+        Q_UNUSED(updated)
         emit this->receivedRequestedElevation(plane, callsign);
     }
 
@@ -1032,7 +1033,7 @@ namespace BlackCore
 
     bool ISimulator::disconnectFrom()
     {
-        // supposed to be overridden
+        m_averageFps = -1.0;
         return true;
     }
 
diff --git a/src/blackcore/simulator.h b/src/blackcore/simulator.h
index 8b51be103..2eeaa9d0d 100644
--- a/src/blackcore/simulator.h
+++ b/src/blackcore/simulator.h
@@ -103,7 +103,7 @@ namespace BlackCore
         virtual bool connectTo() = 0;
 
         //! Disconnect from simulator
-        virtual bool disconnectFrom() = 0;
+        virtual bool disconnectFrom();
 
         //! Logically add a new aircraft.
         //! Depending on max. aircraft, enabled status etc. it will physically added to the simulator.
@@ -215,6 +215,9 @@ namespace BlackCore
         //! Test mode?
         bool isTestMode() const { return m_test; }
 
+        //! Average FPS (frames per second)
+        double getAverageFPS() const { return m_averageFps; }
+
         //! Send situation/parts for testing
         virtual bool testSendSituationAndParts(const BlackMisc::Aviation::CCallsign &callsign, const BlackMisc::Aviation::CAircraftSituation &situation, const BlackMisc::Aviation::CAircraftParts &parts) = 0;
 
@@ -575,6 +578,7 @@ namespace BlackCore
         int    m_statsUpdateAircraftRuns        = 0;      //!< statistics update count
         int    m_statsUpdateAircraftLimited     = 0;      //!< skipped because of max.update limitations
         double m_statsUpdateAircraftTimeAvgMs   = 0;      //!< statistics average update time
+        double m_averageFps                     = -1.0;   //!< FPS
         qint64 m_updateAllRemoteAircraftUntil   = 0;      //!< force an update of all remote aircraft, used when own aircraft is moved, paused to make sure all remote aircraft are updated
         qint64 m_statsUpdateAircraftTimeTotalMs = 0;      //!< statistics total update time
         qint64 m_statsCurrentUpdateTimeMs       = 0;      //!< statistics current update time
diff --git a/src/blackgui/components/simulatorcomponent.cpp b/src/blackgui/components/simulatorcomponent.cpp
index 11ae0b350..16a9ecc20 100644
--- a/src/blackgui/components/simulatorcomponent.cpp
+++ b/src/blackgui/components/simulatorcomponent.cpp
@@ -146,7 +146,14 @@ namespace BlackGui
             if (m_simulator.isAnySimulator())
             {
                 this->addOrUpdateLiveDataByName("simulator", m_simulator.toQString(true), m_simulator.toIcon());
+
+                if (sGui->getISimulator())
+                {
+                    const double fps = sGui->getISimulator()->getAverageFPS();
+                    this->addOrUpdateLiveDataByName(QStringLiteral("FPS"), fps < 0 ? QStringLiteral("N/A") : QString::number(fps, 'g', 1), CIconList::allIcons().findByIndex(CIcons::ApplicationSimulator));
+                }
             }
+
             this->addOrUpdateLiveDataByName(QStringLiteral("latitude"),  s.latitude().toQString(),  iconLatLng);
             this->addOrUpdateLiveDataByName(QStringLiteral("longitude"), s.longitude().toQString(), iconLatLng);
             this->addOrUpdateLiveDataByName(QStringLiteral("altitude, true (ft)"), s.getAltitude().valueRoundedWithUnit(CLengthUnit::ft(), 1), iconAlt);
@@ -157,7 +164,7 @@ namespace BlackGui
             if (s.hasGroundElevation())
             {
                 this->addOrUpdateLiveDataByName(QStringLiteral("elevation (ft)"), s.getGroundElevation().valueRoundedWithUnit(CLengthUnit::ft(), 1), iconAlt);
-                this->addOrUpdateLiveDataByName(QStringLiteral("elevation (m)"), s.getGroundElevation().valueRoundedWithUnit(CLengthUnit::m(),  2), iconAlt);
+                this->addOrUpdateLiveDataByName(QStringLiteral("elevation (m)"),  s.getGroundElevation().valueRoundedWithUnit(CLengthUnit::m(),  2), iconAlt);
             }
             else
             {
diff --git a/src/plugins/simulator/xplane/simulatorxplane.cpp b/src/plugins/simulator/xplane/simulatorxplane.cpp
index c97b46db5..a6667ee81 100644
--- a/src/plugins/simulator/xplane/simulatorxplane.cpp
+++ b/src/plugins/simulator/xplane/simulatorxplane.cpp
@@ -236,6 +236,8 @@ namespace BlackSimPlugin
         {
             if (this->isConnected())
             {
+                m_fastTimerCalls++;
+
                 m_serviceProxy->getOwnAircraftSituationDataAsync(&m_xplaneData);
                 m_serviceProxy->getOwnAircraftCom1DataAsync(&m_xplaneData);
                 m_serviceProxy->getOwnAircraftCom2DataAsync(&m_xplaneData);
@@ -313,6 +315,8 @@ namespace BlackSimPlugin
         {
             if (isConnected())
             {
+                m_slowTimerCalls++;
+
                 // own aircraft data
                 m_serviceProxy->getOwnAircraftModelDataAsync(&m_xplaneData);
                 m_serviceProxy->getOwnAircraftLightsAsync(&m_xplaneData);
@@ -360,6 +364,13 @@ namespace BlackSimPlugin
                 {
                     this->triggerRemoveAircraft(cs, ++i * 100);
                 }
+
+                // FPS
+                if ((m_slowTimerCalls % 5) == 0)
+                {
+                    // reading FPS resets average, so we only monitor over some time
+                    m_averageFps = m_serviceProxy->getAverageFPS();
+                }
             }
         }
 
@@ -435,6 +446,9 @@ namespace BlackSimPlugin
             m_serviceProxy = nullptr;
             m_trafficProxy = nullptr;
             m_weatherProxy = nullptr;
+            m_fastTimerCalls = 0;
+            m_slowTimerCalls = 0;
+
             this->emitSimulatorCombinedStatus();
             return true;
         }
diff --git a/src/plugins/simulator/xplane/simulatorxplane.h b/src/plugins/simulator/xplane/simulatorxplane.h
index fadfb62ea..62501f6ba 100644
--- a/src/plugins/simulator/xplane/simulatorxplane.h
+++ b/src/plugins/simulator/xplane/simulatorxplane.h
@@ -250,6 +250,9 @@ namespace BlackSimPlugin
             QTimer m_slowTimer;
             QTimer m_airportUpdater;
             QTimer m_pendingAddedTimer;
+            int m_fastTimerCalls = 0; //!< how often called
+            int m_slowTimerCalls = 0; //!< how often called
+
             BlackMisc::Aviation::CAirportList m_airportsInRange; //!< aiports in range of own aircraft
             BlackMisc::Simulation::CSimulatedAircraftList m_pendingToBeAddedAircraft; //!< aircraft to be added
             QHash<BlackMisc::Aviation::CCallsign, qint64> m_addingInProgressAircraft; //!< aircraft just adding