diff --git a/OptionPanel/MachiningOptionPanel/OperationExpander/DispositionParameterExpander/DispositionParameterExpanderVM.vb b/OptionPanel/MachiningOptionPanel/OperationExpander/DispositionParameterExpander/DispositionParameterExpanderVM.vb
index 3d192c4..50e4991 100644
--- a/OptionPanel/MachiningOptionPanel/OperationExpander/DispositionParameterExpander/DispositionParameterExpanderVM.vb
+++ b/OptionPanel/MachiningOptionPanel/OperationExpander/DispositionParameterExpander/DispositionParameterExpanderVM.vb
@@ -273,7 +273,7 @@ Public Class DispositionParameterExpanderVM
       End If
       Select Case m_ActiveObject
          Case ObjectType.RAWPART
-            ' Abilito la selezione delle Fixture
+            ' Abilito la selezione dei Grezzi
             Map.refProjectVM.SceneSelType = SceneSelTypeOpt.RAWPART
          Case ObjectType.FIXTURE
             ' Abilito la selezione delle Fixture
diff --git a/OptionPanel/MachiningOptionPanel/OperationExpander/DispositionParameterExpander/FixtureParameters/FixtureParametersVM.vb b/OptionPanel/MachiningOptionPanel/OperationExpander/DispositionParameterExpander/FixtureParameters/FixtureParametersVM.vb
index 7c8ab7a..59200d9 100644
--- a/OptionPanel/MachiningOptionPanel/OperationExpander/DispositionParameterExpander/FixtureParameters/FixtureParametersVM.vb
+++ b/OptionPanel/MachiningOptionPanel/OperationExpander/DispositionParameterExpander/FixtureParameters/FixtureParametersVM.vb
@@ -62,8 +62,8 @@ Public Class FixtureParametersVM
       Dim nUsedFixtureId As Integer = EgtGetFirstFixture()
       While nUsedFixtureId <> GDB_ID.NULL
          Dim sUsedFixtureName As String = String.Empty
+         EgtGetName(nUsedFixtureId, sUsedFixtureName)
          For Index = 0 To m_FixtureTypeList.Count - 1
-            EgtGetName(nUsedFixtureId, sUsedFixtureName)
             If sUsedFixtureName = m_FixtureTypeList(Index).Name Then
                Dim CurrFixtureType As FixtureType = DirectCast(m_FixtureTypeList(Index), FixtureType)
                CurrFixtureType.UsedNumber += 1
@@ -76,6 +76,7 @@ Public Class FixtureParametersVM
 
    Friend Sub UpdateFixtureTypeList()
       m_FixtureTypeList = New ObservableCollection(Of FixtureListItem)(FixtureType.ReadFixtureTypeFromMachIni())
+      UpdateFixtureCount()
       OnPropertyChanged("FixtureTypeList")
    End Sub
 
diff --git a/OptionPanel/MachiningOptionPanel/SimulationExpander/SimulationExpanderVM.vb b/OptionPanel/MachiningOptionPanel/SimulationExpander/SimulationExpanderVM.vb
index ed42214..156511f 100644
--- a/OptionPanel/MachiningOptionPanel/SimulationExpander/SimulationExpanderVM.vb
+++ b/OptionPanel/MachiningOptionPanel/SimulationExpander/SimulationExpanderVM.vb
@@ -348,8 +348,10 @@ Public Class SimulationExpanderVM
             End If
             ' Aggiorno stato visualizzazione macchina (dipende anche da utensile)
             UpdateMachView()
-            ' Aggiorno visualizzazione
-            EgtDraw()
+            ' Aggiorno visualizzazione (solo se interfaccia non minimizzata, per aumentare velocità)
+            If Application.Current.MainWindow.WindowState <> WindowState.Minimized Then
+               EgtDraw()
+            End If
             ' Aggiorno dati CNC
             If nShowDataCounter = 5 Or GetSimulationStatus() = MCH_SIM_ST.UI_PAUSE Or GetSimulationStatus() = MCH_SIM_ST.UI_STOP Then
                ShowCncData()