diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/devtools/VarInspector.java b/runelite-client/src/main/java/net/runelite/client/plugins/devtools/VarInspector.java
index ef8454b712..e39a0bcba2 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/devtools/VarInspector.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/devtools/VarInspector.java
@@ -24,6 +24,8 @@
  */
 package net.runelite.client.plugins.devtools;
 
+import com.google.common.collect.HashMultimap;
+import com.google.common.collect.Multimap;
 import com.google.inject.Inject;
 import java.awt.BorderLayout;
 import java.awt.Dimension;
@@ -48,13 +50,16 @@ import javax.swing.border.CompoundBorder;
 import lombok.Getter;
 import lombok.extern.slf4j.Slf4j;
 import net.runelite.api.Client;
+import net.runelite.api.IndexDataBase;
 import net.runelite.api.VarClientInt;
 import net.runelite.api.VarClientStr;
 import net.runelite.api.VarPlayer;
+import net.runelite.api.VarbitComposition;
 import net.runelite.api.Varbits;
 import net.runelite.api.events.VarClientIntChanged;
 import net.runelite.api.events.VarClientStrChanged;
 import net.runelite.api.events.VarbitChanged;
+import net.runelite.client.callback.ClientThread;
 import net.runelite.client.eventbus.EventBus;
 import net.runelite.client.eventbus.Subscribe;
 import net.runelite.client.ui.ClientUI;
@@ -84,9 +89,10 @@ class VarInspector extends JFrame
 	}
 
 	private final static int MAX_LOG_ENTRIES = 10_000;
+	private static final int VARBITS_ARCHIVE_ID = 14;
 
 	private final Client client;
-	private final DevToolsPlugin plugin;
+	private final ClientThread clientThread;
 	private final EventBus eventBus;
 
 	private final JPanel tracker = new JPanel();
@@ -95,16 +101,16 @@ class VarInspector extends JFrame
 
 	private int[] oldVarps = null;
 	private int[] oldVarps2 = null;
-	private int numVarbits = 10000;
 
+	private Multimap<Integer, Integer> varbits;
 	private Map<Integer, Object> varcs = null;
 
 	@Inject
-	VarInspector(Client client, EventBus eventBus, DevToolsPlugin plugin)
+	VarInspector(Client client, ClientThread clientThread, EventBus eventBus, DevToolsPlugin plugin)
 	{
-		this.eventBus = eventBus;
 		this.client = client;
-		this.plugin = plugin;
+		this.clientThread = clientThread;
+		this.eventBus = eventBus;
 
 		setTitle("RuneLite Var Inspector");
 		setIconImage(ClientUI.ICON);
@@ -213,63 +219,51 @@ class VarInspector extends JFrame
 	}
 
 	@Subscribe
-	public void onVarbitChanged(VarbitChanged ev)
+	public void onVarbitChanged(VarbitChanged varbitChanged)
 	{
+		int index = varbitChanged.getIndex();
 		int[] varps = client.getVarps();
 
 		// Check varbits
-		for (int i = 0; i < numVarbits; i++)
+		for (int i : varbits.get(index))
 		{
-			try
+			int old = client.getVarbitValue(oldVarps, i);
+			int neew = client.getVarbitValue(varps, i);
+			if (old != neew)
 			{
-				int old = client.getVarbitValue(oldVarps, i);
-				int neew = client.getVarbitValue(varps, i);
-				if (old != neew)
-				{
-					// Set the varbit so it doesn't show in the varp changes
-					// However, some varbits share common bits, so we only do it in oldVarps2
-					// Example: 4101 collides with 4104-4129
-					client.setVarbitValue(oldVarps2, i, neew);
+				// Set the varbit so it doesn't show in the varp changes
+				// However, some varbits share common bits, so we only do it in oldVarps2
+				// Example: 4101 collides with 4104-4129
+				client.setVarbitValue(oldVarps2, i, neew);
 
-					String name = String.format("%d", i);
-					for (Varbits varbit : Varbits.values())
+				String name = Integer.toString(i);
+				for (Varbits varbit : Varbits.values())
+				{
+					if (varbit.getId() == i)
 					{
-						if (varbit.getId() == i)
-						{
-							name = String.format("%s(%d)", varbit.name(), i);
-							break;
-						}
+						name = String.format("%s(%d)", varbit.name(), i);
+						break;
 					}
-					addVarLog(VarType.VARBIT, name, old, neew);
 				}
-			}
-			catch (IndexOutOfBoundsException e)
-			{
-				// We don't know what the last varbit is, so we just hit the end, then set it for future iterations
-				log.debug("Hit OOB at varbit {}", i);
-				numVarbits = i;
-				break;
+				addVarLog(VarType.VARBIT, name, old, neew);
 			}
 		}
 
 		// Check varps
-		for (int i = 0; i < varps.length; i++)
+		int old = oldVarps2[index];
+		int neew = varps[index];
+		if (old != neew)
 		{
-			int old = oldVarps2[i];
-			int neew = varps[i];
-			if (old != neew)
+			String name = Integer.toString(index);
+			for (VarPlayer varp : VarPlayer.values())
 			{
-				String name = String.format("%d", i);
-				for (VarPlayer varp : VarPlayer.values())
+				if (varp.getId() == index)
 				{
-					if (varp.getId() == i)
-					{
-						name = String.format("%s(%d)", varp.name(), i);
-						break;
-					}
+					name = String.format("%s(%d)", varp.name(), index);
+					break;
 				}
-				addVarLog(VarType.VARP, name, old, neew);
 			}
+			addVarLog(VarType.VARP, name, old, neew);
 		}
 
 		System.arraycopy(client.getVarps(), 0, oldVarps, 0, oldVarps.length);
@@ -349,6 +343,22 @@ class VarInspector extends JFrame
 		System.arraycopy(client.getVarps(), 0, oldVarps, 0, oldVarps.length);
 		System.arraycopy(client.getVarps(), 0, oldVarps2, 0, oldVarps2.length);
 		varcs = new HashMap<>(client.getVarcMap());
+		varbits = HashMultimap.create();
+
+		clientThread.invoke(() ->
+		{
+			// Build varp index -> varbit id map
+			IndexDataBase indexVarbits = client.getIndexConfig();
+			final int[] varbitIds = indexVarbits.getFileIds(VARBITS_ARCHIVE_ID);
+			for (int id : varbitIds)
+			{
+				VarbitComposition varbit = client.getVarbit(id);
+				if (varbit != null)
+				{
+					varbits.put(varbit.getIndex(), id);
+				}
+			}
+		});
 
 		eventBus.register(this);
 		setVisible(true);
@@ -361,5 +371,7 @@ class VarInspector extends JFrame
 		tracker.removeAll();
 		eventBus.unregister(this);
 		setVisible(false);
+		varcs = null;
+		varbits = null;
 	}
 }