diff --git a/src/outputs/histogram.cpp b/src/outputs/histogram.cpp
index 88c6ced2ecd3..366856f71298 100644
--- a/src/outputs/histogram.cpp
+++ b/src/outputs/histogram.cpp
@@ -207,8 +207,10 @@ Histogram::Histogram(ParameterInput *pin, const std::string &block_name,
   const auto nybins = ndim_ == 2 ? y_edges_.extent_int(0) - 1 : 1;
 
   result_ = ParArray2D<Real>(prefix + "result", nybins, nxbins);
-  scatter_result =
-      Kokkos::Experimental::ScatterView<Real **, LayoutWrapper>(result_.KokkosView());
+  scatter_result = Kokkos::Experimental::ScatterView<
+      Real **, LayoutWrapper, parthenon::DevExecSpace, Kokkos::Experimental::ScatterSum,
+      Kokkos::Experimental::ScatterDuplicated, Kokkos::Experimental::ScatterNonAtomic>(
+      result.KokkosView());
 
   accumulate_ = pin->GetOrAddBoolean(block_name, prefix + "accumulate", false);
   weight_by_vol_ = pin->GetOrAddBoolean(block_name, prefix + "weight_by_volume", false);
diff --git a/src/outputs/outputs.hpp b/src/outputs/outputs.hpp
index 4fd64236a19c..751b29fb5539 100644
--- a/src/outputs/outputs.hpp
+++ b/src/outputs/outputs.hpp
@@ -250,9 +250,14 @@ struct Histogram {
   int weight_var_component_;
   ParArray2D<Real> result_; // resulting histogram
 
-  // temp view for histogram reduction for better performance (switches
-  // between atomics and data duplication depending on the platform)
-  Kokkos::Experimental::ScatterView<Real **, LayoutWrapper> scatter_result;
+  // temp view for histogram reduction for better performance.
+  // In theory, switches between atomics and data duplication depending on the platform.
+  // In practice, the defaults turned out to be extremely slow on MI250X so we now use the
+  // hardcoded non-atomic version (for now).
+  Kokkos::Experimental::ScatterView<
+      Real **, LayoutWrapper, parthenon::DevExecSpace, Kokkos::Experimental::ScatterSum,
+      Kokkos::Experimental::ScatterDuplicated, Kokkos::Experimental::ScatterNonAtomic>
+      scatter_result;
   Histogram(ParameterInput *pin, const std::string &block_name, const std::string &name);
   void CalcHist(Mesh *pm);
 };