diff --git a/common/src/main/java/us/myles/ViaVersion/api/rewriters/MetadataRewriter.java b/common/src/main/java/us/myles/ViaVersion/api/rewriters/MetadataRewriter.java
index edf6106d6..a9dfb16ef 100644
--- a/common/src/main/java/us/myles/ViaVersion/api/rewriters/MetadataRewriter.java
+++ b/common/src/main/java/us/myles/ViaVersion/api/rewriters/MetadataRewriter.java
@@ -185,7 +185,7 @@ public abstract class MetadataRewriter {
 
     public <T extends Enum<T> & EntityType> void mapTypes(EntityType[] oldTypes, Class<T> newTypeClass) {
         if (typeMapping == null) {
-            typeMapping = new Int2IntOpenHashMap(oldTypes.length);
+            typeMapping = new Int2IntOpenHashMap(oldTypes.length, 1F);
             typeMapping.defaultReturnValue(-1);
         }
         for (EntityType oldType : oldTypes) {
diff --git a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/blockconnections/ConnectionData.java b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/blockconnections/ConnectionData.java
index c2f8ac3a4..ca987d257 100644
--- a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/blockconnections/ConnectionData.java
+++ b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/blockconnections/ConnectionData.java
@@ -31,11 +31,11 @@ import java.util.Map.Entry;
 public class ConnectionData {
     private static final BlockChangeRecord[] A = new BlockChangeRecord[0];
     public static BlockConnectionProvider blockConnectionProvider;
-    static Int2ObjectMap<String> idToKey = new Int2ObjectOpenHashMap<>(8582);
-    static Map<String, Integer> keyToId = new HashMap<>(8582);
+    static Int2ObjectMap<String> idToKey = new Int2ObjectOpenHashMap<>(8582, 1F);
+    static Map<String, Integer> keyToId = new HashMap<>(8582, 1F);
     static Int2ObjectMap<ConnectionHandler> connectionHandlerMap = new Int2ObjectOpenHashMap<>(1);
     static Int2ObjectMap<BlockData> blockConnectionData = new Int2ObjectOpenHashMap<>(1);
-    static IntSet occludingStates = new IntOpenHashSet(377);
+    static IntSet occludingStates = new IntOpenHashSet(377, 1F);
 
     public static void update(UserConnection user, Position position) {
         for (BlockFace face : BlockFace.values()) {
@@ -213,10 +213,10 @@ public class ConnectionData {
             keyToId.put(key, id);
         }
 
-        connectionHandlerMap = new Int2ObjectOpenHashMap<>(3650);
+        connectionHandlerMap = new Int2ObjectOpenHashMap<>(3650, 1F);
 
         if (!Via.getConfig().isReduceBlockStorageMemory()) {
-            blockConnectionData = new Int2ObjectOpenHashMap<>(1146);
+            blockConnectionData = new Int2ObjectOpenHashMap<>(1146, 1F);
             JsonObject mappingBlockConnections = MappingDataLoader.loadData("blockConnections.json");
             for (Entry<String, JsonElement> entry : mappingBlockConnections.entrySet()) {
                 int id = keyToId.get(entry.getKey());
@@ -243,7 +243,7 @@ public class ConnectionData {
         JsonObject blockData = MappingDataLoader.loadData("blockData.json");
         JsonArray occluding = blockData.getAsJsonArray("occluding");
         for (JsonElement jsonElement : occluding) {
-            occludingStates.add(keyToId.get(jsonElement.getAsString()));
+            occludingStates.add(keyToId.get(jsonElement.getAsString()).intValue());
         }
 
         List<ConnectorInitAction> initActions = new ArrayList<>();
diff --git a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/BlockIdData.java b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/BlockIdData.java
index b1e547384..2e914f432 100644
--- a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/BlockIdData.java
+++ b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/BlockIdData.java
@@ -26,7 +26,7 @@ public class BlockIdData {
                     reader,
                     new TypeToken<Map<String, String[]>>() {
                     }.getType()
-            ));
+            ), 1F);
             fallbackReverseMapping = new HashMap<>();
             for (Map.Entry<String, String[]> entry : blockIdMapping.entrySet()) {
                 for (String val : entry.getValue()) {
diff --git a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/EntityTypeRewriter.java b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/EntityTypeRewriter.java
index fa40fc5d7..a6f1f53cc 100644
--- a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/EntityTypeRewriter.java
+++ b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/data/EntityTypeRewriter.java
@@ -4,7 +4,7 @@ import it.unimi.dsi.fastutil.ints.Int2IntMap;
 import it.unimi.dsi.fastutil.ints.Int2IntOpenHashMap;
 
 public class EntityTypeRewriter {
-    private static final Int2IntMap ENTITY_TYPES = new Int2IntOpenHashMap(93);
+    private static final Int2IntMap ENTITY_TYPES = new Int2IntOpenHashMap(83, 1F);
 
     static {
         ENTITY_TYPES.defaultReturnValue(-1);
diff --git a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/packets/WorldPackets.java b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/packets/WorldPackets.java
index d57925314..6537f3453 100644
--- a/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/packets/WorldPackets.java
+++ b/common/src/main/java/us/myles/ViaVersion/protocols/protocol1_13to1_12_2/packets/WorldPackets.java
@@ -33,7 +33,7 @@ import java.util.List;
 import java.util.Optional;
 
 public class WorldPackets {
-    private static final IntSet VALID_BIOMES = new IntOpenHashSet(70);
+    private static final IntSet VALID_BIOMES = new IntOpenHashSet(70, 1F);
 
     static {
         // Client will crash if it receives a invalid biome id