diff --git a/include/xrpl/basics/partitioned_unordered_map.h b/include/xrpl/basics/partitioned_unordered_map.h
index 4e503ad0fa..ee4ee3de12 100644
--- a/include/xrpl/basics/partitioned_unordered_map.h
+++ b/include/xrpl/basics/partitioned_unordered_map.h
@@ -255,9 +255,10 @@ public:
     {
         // Set partitions to the number of hardware threads if the parameter
         // is either empty or set to 0.
-        partitions_ = partitions && *partitions
-            ? *partitions
-            : std::thread::hardware_concurrency();
+        partitions_ = std::size_t{std::thread::hardware_concurrency() / 2};
+        // partitions && *partitions
+        //     ? *partitions
+        //     : std::thread::hardware_concurrency();
         map_.resize(partitions_);
         XRPL_ASSERT(
             partitions_,