diff --git a/src/main/java/com/volmit/iris/engine/actuator/IrisBiomeActuator.java b/src/main/java/com/volmit/iris/engine/actuator/IrisBiomeActuator.java
index 796eaaf9b..fc9f304e4 100644
--- a/src/main/java/com/volmit/iris/engine/actuator/IrisBiomeActuator.java
+++ b/src/main/java/com/volmit/iris/engine/actuator/IrisBiomeActuator.java
@@ -63,7 +63,7 @@ public class IrisBiomeActuator extends EngineAssignedActuator<Biome> {
 
     @BlockCoordinates
     @Override
-    public void onActuate(int x, int z, Hunk<Biome> h) {
+    public void onActuate(int x, int z, Hunk<Biome> h, boolean multicore) {
         PrecisionStopwatch p = PrecisionStopwatch.start();
         int zf, maxHeight;
         IrisBiome ib;
diff --git a/src/main/java/com/volmit/iris/engine/actuator/IrisDecorantActuator.java b/src/main/java/com/volmit/iris/engine/actuator/IrisDecorantActuator.java
index c422c2fa7..16cf9e3a0 100644
--- a/src/main/java/com/volmit/iris/engine/actuator/IrisDecorantActuator.java
+++ b/src/main/java/com/volmit/iris/engine/actuator/IrisDecorantActuator.java
@@ -80,7 +80,7 @@ public class IrisDecorantActuator extends EngineAssignedActuator<BlockData> {
 
     @BlockCoordinates
     @Override
-    public void onActuate(int x, int z, Hunk<BlockData> output) {
+    public void onActuate(int x, int z, Hunk<BlockData> output, boolean multicore) {
         if (!getEngine().getDimension().isDecorate()) {
             return;
         }
diff --git a/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainIslandActuator.java b/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainIslandActuator.java
index 84184b3eb..a0a90d8d9 100644
--- a/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainIslandActuator.java
+++ b/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainIslandActuator.java
@@ -53,7 +53,7 @@ public class IrisTerrainIslandActuator extends EngineAssignedActuator<BlockData>
 
     @BlockCoordinates
     @Override
-    public void onActuate(int x, int z, Hunk<BlockData> h) {
+    public void onActuate(int x, int z, Hunk<BlockData> h, boolean multicore) {
         PrecisionStopwatch p = PrecisionStopwatch.start();
         int i, zf, depth, surface, realX, realZ;
         IrisBiome biome;
diff --git a/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainNormalActuator.java b/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainNormalActuator.java
index d5c2344e4..a09aebded 100644
--- a/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainNormalActuator.java
+++ b/src/main/java/com/volmit/iris/engine/actuator/IrisTerrainNormalActuator.java
@@ -51,15 +51,27 @@ public class IrisTerrainNormalActuator extends EngineAssignedActuator<BlockData>
 
     @BlockCoordinates
     @Override
-    public void onActuate(int x, int z, Hunk<BlockData> h) {
+    public void onActuate(int x, int z, Hunk<BlockData> h, boolean multicore) {
         PrecisionStopwatch p = PrecisionStopwatch.start();
-        BurstExecutor e = getEngine().burst().burst(h.getWidth());
-        for (int xf = 0; xf < h.getWidth(); xf++) {
-            int finalXf = xf;
-            e.queue(() -> terrainSliver(x, z, finalXf, h));
+
+        if(multicore)
+        {
+            BurstExecutor e = getEngine().burst().burst(h.getWidth());
+            for (int xf = 0; xf < h.getWidth(); xf++) {
+                int finalXf = xf;
+                e.queue(() -> terrainSliver(x, z, finalXf, h));
+            }
+
+            e.complete();
+        }
+
+        else
+        {
+            for (int xf = 0; xf < h.getWidth(); xf++) {
+                terrainSliver(x, z, xf, h);
+            }
         }
 
-        e.complete();
         getEngine().getMetrics().getTerrain().put(p.getMilliseconds());
     }