diff --git a/src/blackmisc/simulation/settings/xswiftbussettingsqtfree.cpp b/src/blackmisc/simulation/settings/xswiftbussettingsqtfree.cpp
index c0263bcbf..eae8951a2 100644
--- a/src/blackmisc/simulation/settings/xswiftbussettingsqtfree.cpp
+++ b/src/blackmisc/simulation/settings/xswiftbussettingsqtfree.cpp
@@ -7,14 +7,11 @@
  */
 
 #include "xswiftbussettingsqtfree.h"
-#include "blackmisc/simulation/xplane/qtfreeutils.h"
 
 #include "rapidjson/document.h"     // rapidjson's DOM-style API
 #include "rapidjson/prettywriter.h" // for stringify JSON
 
-#include <climits>
 #include <string>
-#include <cmath>
 #include <chrono>
 
 using namespace BlackMisc::Simulation::Settings;
@@ -37,14 +34,6 @@ namespace BlackMisc
     {
         namespace Settings
         {
-            // Qt free version
-            bool isFuzzyEqual(double v1, double v2)
-            {
-                // we can be a little fuzzy here
-                static const double Epsilon = 5 * std::numeric_limits<double>::min();
-                return (fabs(v1 - v2) < Epsilon);
-            }
-
             CXSwiftBusSettingsQtFree::CXSwiftBusSettingsQtFree()
             {}
 
@@ -53,27 +42,6 @@ namespace BlackMisc
                 this->parseXSwiftBusString(json);
             }
 
-            bool CXSwiftBusSettingsQtFree::setMaxPlanes(int planes)
-            {
-                if (planes == m_maxPlanes) { return false; }
-                m_maxPlanes = planes;
-                return true;
-            }
-
-            bool CXSwiftBusSettingsQtFree::setFollowAircraftDistanceM(int meters)
-            {
-                if (meters == m_followAircraftDistanceM) { return false; }
-                m_followAircraftDistanceM = meters;
-                return true;
-            }
-
-            bool CXSwiftBusSettingsQtFree::setMaxDrawDistanceNM(double nauticalMiles)
-            {
-                if (isFuzzyEqual(nauticalMiles, m_maxDrawDistanceNM)) { return false; }
-                m_maxDrawDistanceNM = nauticalMiles;
-                return true;
-            }
-
             bool CXSwiftBusSettingsQtFree::parseXSwiftBusString(const std::string &json)
             {
                 if (json.empty()) { return false; }
@@ -159,7 +127,7 @@ namespace BlackMisc
                 if (m_maxPlanes          != newValues.m_maxPlanes)          { m_maxPlanes          = newValues.m_maxPlanes;          changed++; }
                 if (m_msSinceEpochQtFree != newValues.m_msSinceEpochQtFree) { m_msSinceEpochQtFree = newValues.m_msSinceEpochQtFree; changed++; }
                 if (m_followAircraftDistanceM != newValues.m_followAircraftDistanceM)  { m_followAircraftDistanceM = newValues.m_followAircraftDistanceM; changed++; }
-                if (!isFuzzyEqual(m_maxDrawDistanceNM, newValues.m_maxDrawDistanceNM)) { m_maxDrawDistanceNM = newValues.m_maxDrawDistanceNM; changed++; }
+                if (!QtFreeUtils::isFuzzyEqual(m_maxDrawDistanceNM, newValues.m_maxDrawDistanceNM)) { m_maxDrawDistanceNM = newValues.m_maxDrawDistanceNM; changed++; }
 
                 if (changed > 0) { this->objectUpdated(); } // post processing
                 return changed;
diff --git a/src/blackmisc/simulation/settings/xswiftbussettingsqtfree.h b/src/blackmisc/simulation/settings/xswiftbussettingsqtfree.h
index c58b77f4a..2771321c8 100644
--- a/src/blackmisc/simulation/settings/xswiftbussettingsqtfree.h
+++ b/src/blackmisc/simulation/settings/xswiftbussettingsqtfree.h
@@ -9,6 +9,7 @@
 #ifndef BLACKMISC_SIMULATION_SETTINGS_CXSWIFTBUSSETTINGSQTFREE_H
 #define BLACKMISC_SIMULATION_SETTINGS_CXSWIFTBUSSETTINGSQTFREE_H
 
+#include "blackmisc/simulation/xplane/qtfreeutils.h"
 #include <string>
 
 namespace BlackMisc
@@ -46,13 +47,23 @@ namespace BlackMisc
                 bool isDrawingLabels() const { return m_drawingLabels; }
 
                 //! Set the maximum number of aircraft.
-                bool setMaxPlanes(int planes);
+                bool setMaxPlanes(int planes)
+                {
+                    if (planes == m_maxPlanes) { return false; }
+                    m_maxPlanes = planes;
+                    return true;
+                }
 
                 //! Get the maximum number of aircraft.
                 int getMaxPlanes() const { return m_maxPlanes; }
 
                 //! Set follow aircraft distance
-                bool setFollowAircraftDistanceM(int meters);
+                bool setFollowAircraftDistanceM(int meters)
+                {
+                    if (meters == m_followAircraftDistanceM) { return false; }
+                    m_followAircraftDistanceM = meters;
+                    return true;
+                }
 
                 //! Get follow aircraft distance
                 int getFollowAircraftDistanceM() const { return m_followAircraftDistanceM; }
@@ -61,7 +72,12 @@ namespace BlackMisc
                 double getMaxDrawDistanceNM() const { return m_maxDrawDistanceNM; }
 
                 //! Set the maximum distance at which to draw aircraft (nautical miles).
-                bool setMaxDrawDistanceNM(double nauticalMiles);
+                bool setMaxDrawDistanceNM(double nauticalMiles)
+                {
+                    if (BlackMisc::Simulation::XPlane::QtFreeUtils::isFuzzyEqual(nauticalMiles, m_maxDrawDistanceNM)) { return false; }
+                    m_maxDrawDistanceNM = nauticalMiles;
+                    return true;
+                }
 
                 //! Load and parse config file
                 bool parseXSwiftBusString(const std::string &json);
diff --git a/src/blackmisc/simulation/xplane/qtfreeutils.h b/src/blackmisc/simulation/xplane/qtfreeutils.h
index 3a0c203fe..3a69bb911 100644
--- a/src/blackmisc/simulation/xplane/qtfreeutils.h
+++ b/src/blackmisc/simulation/xplane/qtfreeutils.h
@@ -15,6 +15,7 @@
 #include <fstream>
 #include <vector>
 #include <cctype>
+#include <cmath>
 #include <algorithm>
 
 // Strict header only X-Plane model parser utils shared between BlackMisc and XSwiftBus.
@@ -155,6 +156,15 @@ namespace BlackMisc
                     return t ? tr : fa;
                 }
 
+                //! Qt free version of fuzzy compare
+                inline bool isFuzzyEqual(double v1, double v2)
+                {
+                    // we allow some epsilon here
+                    // static const double Epsilon = 5 * std::numeric_limits<double>::min();
+                    static const double Epsilon = 1E-08;
+                    return (fabs(v1 - v2) < Epsilon);
+                }
+
                 //! Trim whitespace from the beginning and end, and replace sequences of whitespace with single space characters
                 inline std::string simplifyWhitespace(const std::string &s)
                 {
diff --git a/src/xswiftbus/traffic.cpp b/src/xswiftbus/traffic.cpp
index 52159f75e..1cd9f6171 100644
--- a/src/xswiftbus/traffic.cpp
+++ b/src/xswiftbus/traffic.cpp
@@ -279,12 +279,14 @@ namespace XSwiftBus
 
     void CTraffic::setMaxPlanes(int planes)
     {
-        s_settingsProvider->getSettings().setMaxPlanes(planes);
+        CSettings s = this->getSettings();
+        if (s.setMaxPlanes(planes)) { this->setSettings(s); }
     }
 
     void CTraffic::setMaxDrawDistance(double nauticalMiles)
     {
-        s_settingsProvider->getSettings().setMaxDrawDistanceNM(nauticalMiles);
+        CSettings s = this->getSettings();
+        if (s.setMaxDrawDistanceNM(nauticalMiles)) { this->setSettings(s); }
     }
 
     void CTraffic::addPlane(const std::string &callsign, const std::string &modelName, const std::string &aircraftIcao, const std::string &airlineIcao, const std::string &livery)