diff --git a/src/main/java/ru/betterend/world/surface/SulphuricSurfaceNoiseCondition.java b/src/main/java/ru/betterend/world/surface/SulphuricSurfaceNoiseCondition.java
index 8dd46f45..503875e7 100644
--- a/src/main/java/ru/betterend/world/surface/SulphuricSurfaceNoiseCondition.java
+++ b/src/main/java/ru/betterend/world/surface/SulphuricSurfaceNoiseCondition.java
@@ -13,16 +13,24 @@ public class SulphuricSurfaceNoiseCondition extends SurfaceNoiseCondition {
         this.threshold = threshold;
     }
 
+    private int lastX = Integer.MIN_VALUE;
+    private int lastZ = Integer.MIN_VALUE;
+    private double lastValue = 0;
     @Override
     public boolean test(SurfaceRulesContextAccessor context) {
         final int x = context.getBlockX();
         final int z = context.getBlockZ();
+        if (lastX==x && lastZ==z) return lastValue < threshold;
+
         double value = NOISE.eval(x * 0.03, z * 0.03) + NOISE.eval(x * 0.1, z * 0.1) * 0.3 + MHelper.randRange(
                 -0.1,
                 0.1,
                 MHelper.RANDOM
         );
 
+        lastX=x;
+        lastZ=z;
+        lastValue=value;
         return value < threshold;
     }
 }