diff --git a/api/src/main/java/com/seibel/distanthorizons/api/enums/config/EDhApiDataCompressionMode.java b/api/src/main/java/com/seibel/distanthorizons/api/enums/config/EDhApiDataCompressionMode.java
index e121b0eda..6a2e120d2 100644
--- a/api/src/main/java/com/seibel/distanthorizons/api/enums/config/EDhApiDataCompressionMode.java
+++ b/api/src/main/java/com/seibel/distanthorizons/api/enums/config/EDhApiDataCompressionMode.java
@@ -63,7 +63,17 @@ public enum EDhApiDataCompressionMode
 	 * Write Speed: 15.13 MS / DTO <br>
 	 * Compression ratio: 0.2606 <br>
 	 */
-	Z_STD(2),
+	Z_STD(4),
+	
+	/**
+	 * Similar to {@link EDhApiDataCompressionMode#Z_STD}
+	 * except slower.
+	 * <br>
+	 * This option is only provided for legacy support when processing old databases.
+	 */
+	@Deprecated
+	@DisallowSelectingViaConfigGui
+	Z_STD_STREAM(2),
 	
 	
 	/** 
diff --git a/core/src/main/java/com/seibel/distanthorizons/core/sql/repo/FullDataSourceV2Repo.java b/core/src/main/java/com/seibel/distanthorizons/core/sql/repo/FullDataSourceV2Repo.java
index 14e8456a3..0c2570b5a 100644
--- a/core/src/main/java/com/seibel/distanthorizons/core/sql/repo/FullDataSourceV2Repo.java
+++ b/core/src/main/java/com/seibel/distanthorizons/core/sql/repo/FullDataSourceV2Repo.java
@@ -572,7 +572,6 @@ public class FullDataSourceV2Repo extends AbstractDhRepo<Long, FullDataSourceV2D
 				EDhApiDataCompressionMode compressionModeEnum = EDhApiDataCompressionMode.getFromValue(compressionModeEnumValue);
 				
 				// decompress the data
-				
 				try
 				{
 					ByteArrayList byteArrayList = new ByteArrayList();
diff --git a/core/src/main/java/com/seibel/distanthorizons/core/util/objects/dataStreams/DhDataInputStream.java b/core/src/main/java/com/seibel/distanthorizons/core/util/objects/dataStreams/DhDataInputStream.java
index 66912f4c3..593d98cd1 100644
--- a/core/src/main/java/com/seibel/distanthorizons/core/util/objects/dataStreams/DhDataInputStream.java
+++ b/core/src/main/java/com/seibel/distanthorizons/core/util/objects/dataStreams/DhDataInputStream.java
@@ -79,27 +79,31 @@ public class DhDataInputStream extends DataInputStream
 	{ 
 		super(warpStream(stream, compressionMode)); 
 	}
+	@SuppressWarnings("deprecation")
 	private static InputStream warpStream(ByteArrayInputStream stream, EDhApiDataCompressionMode compressionMode) throws IOException
 	{
 		try
 		{
 			switch (compressionMode)
 			{
-				case Z_STD:
-					// ZStd compression should be handled before this point
-					// just return the stream
 				case UNCOMPRESSED:
 					return stream;
 				case LZ4:
 					return new LZ4FrameInputStream(stream);
+				case Z_STD:
+					// ZStd compression should be handled before this point
+					// just return the stream
+					return stream;
 				case LZMA2:
 					// using an array cache significantly reduces GC pressure
 					ResettableArrayCache arrayCache = LZMA_RESETTABLE_ARRAY_CACHE_GETTER.get();
 					arrayCache.reset();
-					
 					// Note: all LZMA/XZ compressors can be decompressed using this same InputStream
 					return new XZInputStream(stream, arrayCache);
 				
+				case Z_STD_STREAM: // deprecated, only used for legacy support
+					return new ZstdInputStream(stream, RecyclingBufferPool.INSTANCE);
+					
 				default:
 					throw new IllegalArgumentException("No compressor defined for [" + compressionMode + "]");
 			}
diff --git a/core/src/main/java/com/seibel/distanthorizons/core/util/objects/dataStreams/DhDataOutputStream.java b/core/src/main/java/com/seibel/distanthorizons/core/util/objects/dataStreams/DhDataOutputStream.java
index 489e70ebb..829b9d397 100644
--- a/core/src/main/java/com/seibel/distanthorizons/core/util/objects/dataStreams/DhDataOutputStream.java
+++ b/core/src/main/java/com/seibel/distanthorizons/core/util/objects/dataStreams/DhDataOutputStream.java
@@ -66,6 +66,7 @@ public class DhDataOutputStream extends DataOutputStream
 		this.outputByteArray = outputByteArray;
 		this.compressionMode = compressionMode;
 	}
+	@SuppressWarnings("deprecation")
 	private static OutputStream warpStream(ByteArrayOutputStream stream, EDhApiDataCompressionMode compressionMode) throws IOException
 	{
 		try
@@ -96,6 +97,9 @@ public class DhDataOutputStream extends DataOutputStream
 					return new XZOutputStream(stream, new LZMA2Options(3),
 							XZ.CHECK_CRC64, arrayCache);
 				
+				case Z_STD_STREAM: // deprecated, only used for legacy support
+					throw new UnsupportedOperationException("Z_Std streams is deprecated and shouldn't be used for encoding. The faster block encoding format should be used instead.");
+					
 				default:
 					throw new IllegalArgumentException("No compressor defined for ["+compressionMode+"]");
 				}