diff --git a/src/jit-diff/diff.cs b/src/jit-diff/diff.cs
index e9cd749..8d26828 100644
--- a/src/jit-diff/diff.cs
+++ b/src/jit-diff/diff.cs
@@ -46,7 +46,7 @@ private static void StartTasks(List<AssemblyInfo> assemblyWorkList, jitdiff.Conf
             {
                 // We limit the number of tasks we start in parallel to avoid overwhelming the system.
                 // E.g. running frameworks diffs involves 100s of tasks, which can be problematic on machines with limited memory.
-                int parallelism = config.Sequential ? 1 : Environment.ProcessorCount * 2;
+                int parallelism = config.Sequential ? 1 : Environment.ProcessorCount;
 
                 bool anyFailed = false;