Separated pie chart update from node update and added throttling for both.

public/app.js

@@ -347,6 +347,7 @@ window.addEventListener('resize', resizeAndCenterNetwork);
 
 
 let lastUpdateTime = 0;
+let lastPieChartUpdateTime = 0;
 const updateInterval = 120; // 120ms throttle
 
 function updateNodes() {
@@ -355,10 +356,16 @@ function updateNodes() {
     nodes.update(nodesToUpdate);
     nodesToUpdate = [];
     calculateSmallGroups();
-    updatePieChartThrottled();
     updateCounter();
     lastUpdateTime = currentTime;
   }
+  
+  // Separate throttle for pie chart update
+  if (currentTime - lastPieChartUpdateTime >= updateInterval) {
+    updatePieChart();
+    lastPieChartUpdateTime = currentTime;
+  }
+  
   setTimeout(updateNodes, updateInterval);
 }