diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1cc07fd8a..55a72a596 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 - Fixed bug where autocrafting tasks started on the same tick make the wrong assumption about available items and fluids (Darkere)
 - Fixed bug where the "To craft" amount in the Crafting Preview window is wrong (raoulvdberge)
 - Fixed bug where non-pattern items are able to be inserted into the Crafter Manager (Darkere)
+- Fixed performance issue where shapes of cable blocks were constantly being recalculated (raoulvdberge)
 - Drastically improved shift clicking performance in Crafting Grid (Darkere)
 - Removed autocrafting engine version from crafting preview screen (raoulvdberge)
 
diff --git a/src/main/java/com/refinedmods/refinedstorage/block/CableBlock.java b/src/main/java/com/refinedmods/refinedstorage/block/CableBlock.java
index d5de34fad..f838d393d 100644
--- a/src/main/java/com/refinedmods/refinedstorage/block/CableBlock.java
+++ b/src/main/java/com/refinedmods/refinedstorage/block/CableBlock.java
@@ -1,6 +1,7 @@
 package com.refinedmods.refinedstorage.block;
 
 import com.refinedmods.refinedstorage.RS;
+import com.refinedmods.refinedstorage.block.shape.ShapeCache;
 import com.refinedmods.refinedstorage.capability.NetworkNodeProxyCapability;
 import com.refinedmods.refinedstorage.tile.CableTile;
 import com.refinedmods.refinedstorage.util.BlockUtils;
@@ -70,6 +71,10 @@ public class CableBlock extends NetworkNodeBlock implements IWaterLoggable {
     @Override
     @SuppressWarnings("deprecation")
     public VoxelShape getShape(BlockState state, IBlockReader world, BlockPos pos, ISelectionContext ctx) {
+        return ShapeCache.getOrCreate(state, CableBlock::getCableShape);
+    }
+
+    protected static VoxelShape getCableShape(BlockState state) {
         VoxelShape shape = SHAPE_CORE;
 
         if (state.get(NORTH)) {
diff --git a/src/main/java/com/refinedmods/refinedstorage/block/ConstructorBlock.java b/src/main/java/com/refinedmods/refinedstorage/block/ConstructorBlock.java
index 92bf39288..bccd3ccd0 100644
--- a/src/main/java/com/refinedmods/refinedstorage/block/ConstructorBlock.java
+++ b/src/main/java/com/refinedmods/refinedstorage/block/ConstructorBlock.java
@@ -1,6 +1,7 @@
 package com.refinedmods.refinedstorage.block;
 
 import com.refinedmods.refinedstorage.RS;
+import com.refinedmods.refinedstorage.block.shape.ShapeCache;
 import com.refinedmods.refinedstorage.container.ConstructorContainer;
 import com.refinedmods.refinedstorage.container.factory.PositionalTileContainerProvider;
 import com.refinedmods.refinedstorage.tile.ConstructorTile;
@@ -53,11 +54,13 @@ public class ConstructorBlock extends CableBlock {
 
     @Override
     public VoxelShape getShape(BlockState state, IBlockReader world, BlockPos pos, ISelectionContext ctx) {
-        VoxelShape shape = super.getShape(state, world, pos, ctx);
+        return ShapeCache.getOrCreate(state, s -> {
+            VoxelShape shape = getCableShape(s);
 
-        shape = VoxelShapes.or(shape, getHeadShape(state));
+            shape = VoxelShapes.or(shape, getHeadShape(s));
 
-        return shape;
+            return shape;
+        });
     }
 
     private VoxelShape getHeadShape(BlockState state) {
diff --git a/src/main/java/com/refinedmods/refinedstorage/block/DestructorBlock.java b/src/main/java/com/refinedmods/refinedstorage/block/DestructorBlock.java
index 6f1c5d243..999111471 100644
--- a/src/main/java/com/refinedmods/refinedstorage/block/DestructorBlock.java
+++ b/src/main/java/com/refinedmods/refinedstorage/block/DestructorBlock.java
@@ -1,6 +1,7 @@
 package com.refinedmods.refinedstorage.block;
 
 import com.refinedmods.refinedstorage.RS;
+import com.refinedmods.refinedstorage.block.shape.ShapeCache;
 import com.refinedmods.refinedstorage.container.DestructorContainer;
 import com.refinedmods.refinedstorage.container.factory.PositionalTileContainerProvider;
 import com.refinedmods.refinedstorage.tile.DestructorTile;
@@ -53,11 +54,13 @@ public class DestructorBlock extends CableBlock {
 
     @Override
     public VoxelShape getShape(BlockState state, IBlockReader world, BlockPos pos, ISelectionContext ctx) {
-        VoxelShape shape = super.getShape(state, world, pos, ctx);
+        return ShapeCache.getOrCreate(state, s -> {
+            VoxelShape shape = getCableShape(s);
 
-        shape = VoxelShapes.or(shape, getHeadShape(state));
+            shape = VoxelShapes.or(shape, getHeadShape(s));
 
-        return shape;
+            return shape;
+        });
     }
 
     private VoxelShape getHeadShape(BlockState state) {
diff --git a/src/main/java/com/refinedmods/refinedstorage/block/ExporterBlock.java b/src/main/java/com/refinedmods/refinedstorage/block/ExporterBlock.java
index 85d04b412..b0a86230f 100644
--- a/src/main/java/com/refinedmods/refinedstorage/block/ExporterBlock.java
+++ b/src/main/java/com/refinedmods/refinedstorage/block/ExporterBlock.java
@@ -1,6 +1,7 @@
 package com.refinedmods.refinedstorage.block;
 
 import com.refinedmods.refinedstorage.RS;
+import com.refinedmods.refinedstorage.block.shape.ShapeCache;
 import com.refinedmods.refinedstorage.container.ExporterContainer;
 import com.refinedmods.refinedstorage.container.factory.PositionalTileContainerProvider;
 import com.refinedmods.refinedstorage.tile.ExporterTile;
@@ -70,11 +71,13 @@ public class ExporterBlock extends CableBlock {
 
     @Override
     public VoxelShape getShape(BlockState state, IBlockReader world, BlockPos pos, ISelectionContext ctx) {
-        VoxelShape shape = super.getShape(state, world, pos, ctx);
+        return ShapeCache.getOrCreate(state, s -> {
+            VoxelShape shape = getCableShape(s);
 
-        shape = VoxelShapes.or(shape, getLineShape(state));
+            shape = VoxelShapes.or(shape, getLineShape(s));
 
-        return shape;
+            return shape;
+        });
     }
 
     private VoxelShape getLineShape(BlockState state) {
diff --git a/src/main/java/com/refinedmods/refinedstorage/block/ExternalStorageBlock.java b/src/main/java/com/refinedmods/refinedstorage/block/ExternalStorageBlock.java
index 8abb48f03..e203a2f41 100644
--- a/src/main/java/com/refinedmods/refinedstorage/block/ExternalStorageBlock.java
+++ b/src/main/java/com/refinedmods/refinedstorage/block/ExternalStorageBlock.java
@@ -4,6 +4,7 @@ import com.refinedmods.refinedstorage.RS;
 import com.refinedmods.refinedstorage.api.network.node.INetworkNode;
 import com.refinedmods.refinedstorage.api.storage.cache.InvalidateCause;
 import com.refinedmods.refinedstorage.apiimpl.network.node.ExternalStorageNetworkNode;
+import com.refinedmods.refinedstorage.block.shape.ShapeCache;
 import com.refinedmods.refinedstorage.container.ExternalStorageContainer;
 import com.refinedmods.refinedstorage.container.factory.PositionalTileContainerProvider;
 import com.refinedmods.refinedstorage.tile.ExternalStorageTile;
@@ -51,11 +52,13 @@ public class ExternalStorageBlock extends CableBlock {
 
     @Override
     public VoxelShape getShape(BlockState state, IBlockReader world, BlockPos pos, ISelectionContext ctx) {
-        VoxelShape shape = super.getShape(state, world, pos, ctx);
+        return ShapeCache.getOrCreate(state, s -> {
+            VoxelShape shape = getCableShape(s);
 
-        shape = VoxelShapes.or(shape, getHeadShape(state));
+            shape = VoxelShapes.or(shape, getHeadShape(s));
 
-        return shape;
+            return shape;
+        });
     }
 
     private VoxelShape getHeadShape(BlockState state) {
diff --git a/src/main/java/com/refinedmods/refinedstorage/block/ImporterBlock.java b/src/main/java/com/refinedmods/refinedstorage/block/ImporterBlock.java
index 6c18ea2a7..02e5ca1c0 100644
--- a/src/main/java/com/refinedmods/refinedstorage/block/ImporterBlock.java
+++ b/src/main/java/com/refinedmods/refinedstorage/block/ImporterBlock.java
@@ -1,6 +1,7 @@
 package com.refinedmods.refinedstorage.block;
 
 import com.refinedmods.refinedstorage.RS;
+import com.refinedmods.refinedstorage.block.shape.ShapeCache;
 import com.refinedmods.refinedstorage.container.ImporterContainer;
 import com.refinedmods.refinedstorage.container.factory.PositionalTileContainerProvider;
 import com.refinedmods.refinedstorage.tile.ImporterTile;
@@ -70,11 +71,13 @@ public class ImporterBlock extends CableBlock {
 
     @Override
     public VoxelShape getShape(BlockState state, IBlockReader world, BlockPos pos, ISelectionContext ctx) {
-        VoxelShape shape = super.getShape(state, world, pos, ctx);
+        return ShapeCache.getOrCreate(state, s -> {
+            VoxelShape shape = getCableShape(s);
 
-        shape = VoxelShapes.or(shape, getLineShape(state));
+            shape = VoxelShapes.or(shape, getLineShape(s));
 
-        return shape;
+            return shape;
+        });
     }
 
     private VoxelShape getLineShape(BlockState state) {
diff --git a/src/main/java/com/refinedmods/refinedstorage/block/shape/ShapeCache.java b/src/main/java/com/refinedmods/refinedstorage/block/shape/ShapeCache.java
new file mode 100644
index 000000000..ba9b50f98
--- /dev/null
+++ b/src/main/java/com/refinedmods/refinedstorage/block/shape/ShapeCache.java
@@ -0,0 +1,16 @@
+package com.refinedmods.refinedstorage.block.shape;
+
+import net.minecraft.block.BlockState;
+import net.minecraft.util.math.shapes.VoxelShape;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.function.Function;
+
+public class ShapeCache {
+    private static final Map<BlockState, VoxelShape> CACHE = new HashMap<>();
+
+    public static VoxelShape getOrCreate(BlockState state, Function<BlockState, VoxelShape> shapeFactory) {
+        return CACHE.computeIfAbsent(state, shapeFactory);
+    }
+}