diff --git a/src/main/java/appeng/fluids/parts/PartFluidStorageBus.java b/src/main/java/appeng/fluids/parts/PartFluidStorageBus.java
index 7ece80a36..a32c9b95a 100644
--- a/src/main/java/appeng/fluids/parts/PartFluidStorageBus.java
+++ b/src/main/java/appeng/fluids/parts/PartFluidStorageBus.java
@@ -264,18 +264,19 @@ public class PartFluidStorageBus extends PartSharedStorageBus implements IMEMoni
 	@Override
 	public void postChange( final IBaseMonitor<IAEFluidStack> monitor, final Iterable<IAEFluidStack> change, final IActionSource source )
 	{
-		try
+		if( source == this.source || source.machine().map( machine -> machine == this ).orElse( false ) )
 		{
-			if( this.getProxy().isActive() )
+			try
 			{
-				this.getProxy()
-						.getStorage()
-						.postAlterationOfStoredItems( AEApi.instance().storage().getStorageChannel( IFluidStorageChannel.class ), change, this.source );
+				if( this.getProxy().isActive() )
+				{
+					this.getProxy().getStorage().postAlterationOfStoredItems( AEApi.instance().storage().getStorageChannel( IFluidStorageChannel.class ), change, this.source );
+				}
+			}
+			catch( final GridAccessException e )
+			{
+				// :(
 			}
-		}
-		catch( final GridAccessException e )
-		{
-			// :(
 		}
 	}
 
diff --git a/src/main/java/appeng/me/cache/NetworkMonitor.java b/src/main/java/appeng/me/cache/NetworkMonitor.java
index c875fe71a..306eaba21 100644
--- a/src/main/java/appeng/me/cache/NetworkMonitor.java
+++ b/src/main/java/appeng/me/cache/NetworkMonitor.java
@@ -44,6 +44,8 @@ import appeng.api.storage.IStorageChannel;
 import appeng.api.storage.data.IAEStack;
 import appeng.api.storage.data.IItemList;
 import appeng.me.storage.ItemWatcher;
+import it.unimi.dsi.fastutil.objects.Object2ObjectMap;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
 
 
 public class NetworkMonitor<T extends IAEStack<T>> implements IMEMonitor<T>
@@ -58,7 +60,7 @@ public class NetworkMonitor<T extends IAEStack<T>> implements IMEMonitor<T>
 	@Nonnull
 	private final IItemList<T> cachedList;
 	@Nonnull
-	private final Map<IMEMonitorHandlerReceiver<T>, Object> listeners;
+	private final Object2ObjectMap<IMEMonitorHandlerReceiver<T>, Object> listeners;
 
 	private boolean sendEvent = false;
 	private boolean hasChanged = false;
@@ -70,7 +72,7 @@ public class NetworkMonitor<T extends IAEStack<T>> implements IMEMonitor<T>
 		this.myGridCache = cache;
 		this.myChannel = chan;
 		this.cachedList = chan.createList();
-		this.listeners = new HashMap<>();
+		this.listeners = new Object2ObjectOpenHashMap<>();
 	}
 
 	@Override
diff --git a/src/main/java/appeng/parts/misc/ItemHandlerAdapter.java b/src/main/java/appeng/parts/misc/ItemHandlerAdapter.java
index a278aa363..ff75b6c34 100644
--- a/src/main/java/appeng/parts/misc/ItemHandlerAdapter.java
+++ b/src/main/java/appeng/parts/misc/ItemHandlerAdapter.java
@@ -23,6 +23,8 @@ import java.util.*;
 
 import appeng.api.config.Settings;
 import appeng.api.config.StorageFilter;
+import it.unimi.dsi.fastutil.objects.Object2ObjectMap;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
 import net.minecraft.item.ItemStack;
 import net.minecraftforge.items.IItemHandler;
 
@@ -49,7 +51,7 @@ import org.apache.commons.lang3.tuple.Pair;
  */
 class ItemHandlerAdapter implements IMEInventory<IAEItemStack>, IBaseMonitor<IAEItemStack>, ITickingMonitor
 {
-	private final Map<IMEMonitorHandlerReceiver<IAEItemStack>, Object> listeners = new HashMap<>();
+	private final Object2ObjectMap<IMEMonitorHandlerReceiver<IAEItemStack>, Object> listeners = new Object2ObjectOpenHashMap<>();
 	private IActionSource mySource;
 	private final IItemHandler itemHandler;
 	private final IGridProxyable proxyable;
diff --git a/src/main/java/appeng/parts/misc/ItemRepositoryAdapter.java b/src/main/java/appeng/parts/misc/ItemRepositoryAdapter.java
index f28ba6cd9..d3b12fac4 100644
--- a/src/main/java/appeng/parts/misc/ItemRepositoryAdapter.java
+++ b/src/main/java/appeng/parts/misc/ItemRepositoryAdapter.java
@@ -7,6 +7,8 @@ import appeng.api.storage.IStorageChannel;
 
 import appeng.core.AELog;
 import com.jaquadro.minecraft.storagedrawers.api.capabilities.IItemRepository;
+import it.unimi.dsi.fastutil.objects.Object2ObjectMap;
+import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
 import net.minecraft.item.ItemStack;
 
 import appeng.api.AEApi;
@@ -33,7 +35,7 @@ import javax.annotation.Nonnull;
 
 class ItemRepositoryAdapter implements IMEInventory<IAEItemStack>, IBaseMonitor<IAEItemStack>, ITickingMonitor
 {
-    private final Map<IMEMonitorHandlerReceiver<IAEItemStack>, Object> listeners = new HashMap<>();
+    private final Object2ObjectMap<IMEMonitorHandlerReceiver<IAEItemStack>, Object> listeners = new Object2ObjectOpenHashMap<>();
     private IActionSource mySource;
     private final IItemRepository itemRepository;
     private final IGridProxyable proxyable;
diff --git a/src/main/java/appeng/parts/misc/PartStorageBus.java b/src/main/java/appeng/parts/misc/PartStorageBus.java
index 9731f13a7..771f4190e 100644
--- a/src/main/java/appeng/parts/misc/PartStorageBus.java
+++ b/src/main/java/appeng/parts/misc/PartStorageBus.java
@@ -258,19 +258,19 @@ public class PartStorageBus extends PartUpgradeable implements IGridTickable, IC
 	@Override
 	public void postChange( final IBaseMonitor<IAEItemStack> monitor, final Iterable<IAEItemStack> change, final IActionSource source )
 	{
-		try
+		if( source == this.mySrc || source.machine().map( machine -> machine == this ).orElse( false ) )
 		{
-			if( this.getProxy().isActive() )
+			try
 			{
-				this.getProxy()
-						.getStorage()
-						.postAlterationOfStoredItems( AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ), change,
-								this.mySrc );
+				if( this.getProxy().isActive() )
+				{
+					this.getProxy().getStorage().postAlterationOfStoredItems( AEApi.instance().storage().getStorageChannel( IItemStorageChannel.class ), change, this.mySrc );
+				}
+			}
+			catch( final GridAccessException e )
+			{
+				// :(
 			}
-		}
-		catch( final GridAccessException e )
-		{
-			// :(
 		}
 	}