diff --git a/src/main/java/com/volmit/iris/IrisSettings.java b/src/main/java/com/volmit/iris/IrisSettings.java
index cf534e85f..2e6c85132 100644
--- a/src/main/java/com/volmit/iris/IrisSettings.java
+++ b/src/main/java/com/volmit/iris/IrisSettings.java
@@ -9,7 +9,7 @@ public class IrisSettings
 
 	@DontObfuscate
 	@Desc("Iris generator threads (must be 2 or higher).")
-	public int threads = 128;
+	public int threads = 16;
 
 	@DontObfuscate
 	@Desc("Compress parallax data in memory to reduce memory usage in exchange for more cpu usage.")
diff --git a/src/main/java/com/volmit/iris/gen/ParallaxChunkGenerator.java b/src/main/java/com/volmit/iris/gen/ParallaxChunkGenerator.java
index 11c74dcd6..99fd4b7d9 100644
--- a/src/main/java/com/volmit/iris/gen/ParallaxChunkGenerator.java
+++ b/src/main/java/com/volmit/iris/gen/ParallaxChunkGenerator.java
@@ -180,7 +180,6 @@ public abstract class ParallaxChunkGenerator extends TerrainChunkGenerator imple
 		if(getDimension().isPlaceObjects())
 		{
 			onGenerateParallax(random, x, z);
-			injectBiomeSky(x, z, grid);
 			getParallaxChunk(x, z).inject(data);
 			setSliverBuffer(getSliverCache().size());
 			getParallaxChunk(x, z).setWorldGenerated(true);
@@ -194,39 +193,6 @@ public abstract class ParallaxChunkGenerator extends TerrainChunkGenerator imple
 		Iris.data.getObjectLoader().clean();
 	}
 
-	protected void injectBiomeSky(int x, int z, BiomeGrid grid)
-	{
-		if(getDimension().isInverted())
-		{
-			return;
-		}
-
-		int rx;
-		int rz;
-
-		for(int i = 0; i < 16; i++)
-		{
-			rx = (x * 16) + i;
-			for(int j = 0; j < 16; j++)
-			{
-				rz = (z * 16) + j;
-
-				int min = sampleSliver(rx, rz).getHighestBiome();
-				int max = getParallaxSliver(rx, rz).getHighestBlock();
-
-				if(min < max)
-				{
-					IrisBiome biome = getCachedInternalBiome(i, j);
-
-					for(int g = min; g <= max; g++)
-					{
-						grid.setBiome(i, g, j, biome.getSkyBiome(masterRandom, rz, g, rx));
-					}
-				}
-			}
-		}
-	}
-
 	protected void onGenerateParallax(RNG random, int x, int z)
 	{
 		String key = "par." + x + "." + "z";
diff --git a/src/main/java/com/volmit/iris/gen/PostBlockChunkGenerator.java b/src/main/java/com/volmit/iris/gen/PostBlockChunkGenerator.java
index 08c3685cd..b15d07f64 100644
--- a/src/main/java/com/volmit/iris/gen/PostBlockChunkGenerator.java
+++ b/src/main/java/com/volmit/iris/gen/PostBlockChunkGenerator.java
@@ -87,17 +87,23 @@ public abstract class PostBlockChunkGenerator extends ParallaxChunkGenerator imp
 				{
 					int rxx = rx;
 					int rzz = (z << 4) + j;
+					int hh = h;
 
-					for(IrisPostBlockFilter f : filters)
+					getAccelerant().queue("post", () ->
 					{
-						if(f.getPhase() == h)
+						for(IrisPostBlockFilter f : filters)
 						{
-							f.onPost(rxx, rzz);
+							if(f.getPhase() == hh)
+							{
+								f.onPost(rxx, rzz);
+							}
 						}
-					}
+					});
 				}
 			}
 
+			getAccelerant().waitFor("post");
+
 			for(IrisPostBlockFilter f : filters)
 			{
 				if(f.getPhase() == h)