From 2f475d99ddd25b0742b7488a2e71c38d1137bb38 Mon Sep 17 00:00:00 2001
From: Jeff Young <jeff@rokeby.ie>
Date: Wed, 20 Sep 2023 17:34:16 +0100
Subject: [PATCH] Don't update signals and measurements for each refresh.

We only need to do them on the final refresh.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/15673
---
 eeschema/sim/simulator_frame_ui.cpp | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/eeschema/sim/simulator_frame_ui.cpp b/eeschema/sim/simulator_frame_ui.cpp
index 3581ba12c3..4494426950 100644
--- a/eeschema/sim/simulator_frame_ui.cpp
+++ b/eeschema/sim/simulator_frame_ui.cpp
@@ -2680,20 +2680,22 @@ void SIMULATOR_FRAME_UI::OnSimRefresh( bool aFinal )
                 updateTrace( traceInfo.first, traceInfo.second, plotTab );
         }
 
-        rebuildSignalsGrid( m_filter->GetValue() );
-        updateSignalsGrid();
-
         plotTab->GetPlotWin()->UpdateAll();
 
         if( aFinal )
+        {
+            rebuildSignalsGrid( m_filter->GetValue() );
+            updateSignalsGrid();
+
+            for( int row = 0; row < m_measurementsGrid->GetNumberRows(); ++row )
+                UpdateMeasurement( row );
+
             plotTab->ResetScales( true );
+        }
 
         plotTab->GetPlotWin()->Fit();
 
         updatePlotCursors();
-
-        for( int row = 0; row < m_measurementsGrid->GetNumberRows(); ++row )
-            UpdateMeasurement( row );
     }
     else if( simType == ST_OP && aFinal )
     {