diff --git a/runelite-mixins/src/main/java/net/runelite/mixins/CameraMixin.java b/runelite-mixins/src/main/java/net/runelite/mixins/CameraMixin.java
index fc536e6365..b992426797 100644
--- a/runelite-mixins/src/main/java/net/runelite/mixins/CameraMixin.java
+++ b/runelite-mixins/src/main/java/net/runelite/mixins/CameraMixin.java
@@ -24,6 +24,7 @@
  */
 package net.runelite.mixins;
 
+import net.runelite.api.Perspective;
 import net.runelite.api.mixins.FieldHook;
 import net.runelite.api.mixins.Inject;
 import net.runelite.api.mixins.Mixin;
@@ -39,34 +40,35 @@ public abstract class CameraMixin implements RSClient
 	@Shadow("clientInstance")
 	static RSClient client;
 
+	@Shadow("isDrawingRegion")
+	static boolean isDrawingRegion;
+
 	@Inject
 	static boolean pitchRelaxEnabled = false;
 
-	@Shadow("visibilityMaps")
-	static boolean[][][][] visibilityMaps;
-
 	@Inject
 	static int lastPitch = 128;
 
-	static
+
+	@Inject
+	public void setCameraPitchRelaxerEnabled(boolean enabled)
 	{
-		// The first index is pitch. In the default client it is 9, here it is 13 because we increase the pitch limit
-		visibilityMaps = new boolean[13][35][53][53];
-		for (boolean[][][] z : visibilityMaps)
+		if (pitchRelaxEnabled == enabled)
 		{
-			for (boolean[][] y : z)
+			return;
+		}
+		pitchRelaxEnabled = enabled;
+		if (!enabled)
+		{
+			int pitch = client.getCameraPitchTarget();
+			if (pitch > STANDARD_PITCH_MAX)
 			{
-				for (boolean[] x : y)
-				{
-					for (int i = 0; i < x.length; i++)
-					{
-						x[i] = true;
-					}
-				}
+				client.setCameraPitchTarget(STANDARD_PITCH_MAX);
 			}
 		}
 	}
 
+
 	@FieldHook("cameraPitchTarget")
 	@Inject
 	static void onCameraPitchChanged(int idx)
@@ -89,21 +91,26 @@ public abstract class CameraMixin implements RSClient
 		lastPitch = pitch;
 	}
 
+	// All of this is to bypass a check in Region.drawRegion
+
+	@FieldHook("pitchSin")
 	@Inject
-	public void setCameraPitchRelaxerEnabled(boolean enabled)
+	static void onPitchSinChanged(int idx)
 	{
-		if (pitchRelaxEnabled == enabled)
+		if (pitchRelaxEnabled && isDrawingRegion)
 		{
-			return;
+			client.setPitchSin(Perspective.SINE[client.getCameraPitch()]);
 		}
-		pitchRelaxEnabled = enabled;
-		if (!enabled)
+	}
+
+
+	@FieldHook("pitchCos")
+	@Inject
+	static void onPitchCosChanged(int idx)
+	{
+		if (pitchRelaxEnabled && isDrawingRegion)
 		{
-			int pitch = client.getCameraPitchTarget();
-			if (pitch > STANDARD_PITCH_MAX)
-			{
-				client.setCameraPitchTarget(STANDARD_PITCH_MAX);
-			}
+			client.setPitchCos(Perspective.COSINE[client.getCameraPitch()]);
 		}
 	}
 }
\ No newline at end of file
diff --git a/runelite-mixins/src/main/java/net/runelite/mixins/RSRegionMixin.java b/runelite-mixins/src/main/java/net/runelite/mixins/RSRegionMixin.java
new file mode 100644
index 0000000000..4f088c1035
--- /dev/null
+++ b/runelite-mixins/src/main/java/net/runelite/mixins/RSRegionMixin.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2018 Abex
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.mixins;
+
+import net.runelite.api.mixins.Copy;
+import net.runelite.api.mixins.Inject;
+import net.runelite.api.mixins.Mixin;
+import net.runelite.api.mixins.Replace;
+import net.runelite.rs.api.RSRegion;
+
+@Mixin(RSRegion.class)
+public abstract class RSRegionMixin implements RSRegion
+{
+	@Inject
+	static boolean isDrawingRegion;
+
+	@Copy("drawRegion")
+	abstract void rs$drawRegion(int cameraX, int cameraY, int cameraZ, int cameraPitch, int cameraYaw, int plane);
+
+	@Replace("drawRegion")
+	void rl$drawRegion(int cameraX, int cameraY, int cameraZ, int cameraPitch, int cameraYaw, int plane)
+	{
+		try
+		{
+			isDrawingRegion = true;
+			rs$drawRegion(cameraX, cameraY, cameraZ, cameraPitch, cameraYaw, plane);
+		}
+		finally
+		{
+			isDrawingRegion = false;
+		}
+	}
+}
diff --git a/runescape-api/src/main/java/net/runelite/rs/api/RSClient.java b/runescape-api/src/main/java/net/runelite/rs/api/RSClient.java
index c187a1a61e..2c58b20afa 100644
--- a/runescape-api/src/main/java/net/runelite/rs/api/RSClient.java
+++ b/runescape-api/src/main/java/net/runelite/rs/api/RSClient.java
@@ -487,6 +487,12 @@ public interface RSClient extends RSGameEngine, Client
 	@Import("cameraPitchTarget")
 	void setCameraPitchTarget(int pitch);
 
+	@Import("pitchSin")
+	void setPitchSin(int v);
+
+	@Import("pitchCos")
+	void setPitchCos(int v);
+
 	@Import("renderOverview")
 	RSRenderOverview getRenderOverview();
 }