diff --git a/RecipeGenerator.cs b/RecipeGenerator.cs
--- a/RecipeGenerator.cs
+++ b/RecipeGenerator.cs
@@ -263,7 +263,7 @@ namespace DesertPaintLab
             }
             runningThreads = 0; // presumably!
 
-            int threadCount = 1; // Math.Min(costSortedReagents.Count, searchQueue.Count);
+            int threadCount = Math.Min(costSortedReagents.Count, searchQueue.Count);
             if (threadCount == 0)
             {
                 if (Finished != null)