diff --git a/julia/PolyCube.jl b/julia/PolyCube.jl
index 9ce692b..21a1b4f 100644
--- a/julia/PolyCube.jl
+++ b/julia/PolyCube.jl
@@ -23,20 +23,29 @@ function _calculate_oriented_differences(cubes::Vector{Coord})
     n_cubes = length(cubes)
     reorientation = Vector{Coord}(undef, n_cubes)
     oriented_differences = Vector{Vector{Coord}}(undef, n_orientations)
-    for i ∈ 1:n_orientations
+
+    sort!(cubes)
+    _compute_differences!(oriented_differences, cubes, 1)
+
+    for i ∈ 2:n_orientations
         for j ∈ 1:n_cubes
             reorientation[j] = orient_tuple(cubes[j], i)
         end
         sort!(reorientation)
-        reference_cube = reorientation[1]
-        oriented_differences[i] = Vector{Coord}(undef, n_cubes-1)
-        for j ∈ 1:n_cubes-1
-            oriented_differences[i][j] = reference_cube - reorientation[j+1]
-        end
+        _compute_differences!(oriented_differences, reorientation, i)
     end
     return oriented_differences
 end
 
+function _compute_differences!(oriented_differences::Vector{Vector{Coord}}, reorientation::Vector{Coord}, i::Int)
+    n_cubes = length(reorientation)
+    reference_cube = reorientation[1]
+    oriented_differences[i] = Vector{Coord}(undef, n_cubes-1)
+    for j ∈ 1:n_cubes-1
+        oriented_differences[i][j] = reference_cube - reorientation[j+1]
+    end
+end
+
 function generate_children(pcube::PolyCube, n_max::Int)
     cubes = pcube.cubes
     allowed_growth = n_max - length(cubes)
diff --git a/test_results b/test_results
deleted file mode 100644
index 1dc848c..0000000
--- a/test_results
+++ /dev/null
@@ -1,12 +0,0 @@
-=====|main|=====
-BenchmarkTools.Trial: 36 samples with 1 evaluation.
- Range (min … max):  131.581 ms … 159.500 ms  ┊ GC (min … max): 0.00% … 3.94%
- Time  (median):     137.621 ms               ┊ GC (median):    0.00%
- Time  (mean ± σ):   140.185 ms ±   7.360 ms  ┊ GC (mean ± σ):  1.12% ± 1.50%
-
-   ▃▃▃    █ █  ▃ ▃      ▃               ▃
-  ▇███▁▇▁▁█▇█▇▇█▁█▁▁▁▇▇▇█▁▁▇▇▁▁▁▇▁▇▁▁▁▁▁█▁▁▁▇▁▁▁▁▁▁▁▇▁▁▁▁▁▁▁▇▁▇ ▁
-  132 ms           Histogram: frequency by time          160 ms <
-
- Memory estimate: 16.63 MiB, allocs estimate: 371299.
-