diff --git a/tests/analytical_visualization/app.py b/tests/analytical_visualization/app.py
index 43ade29..df07fcb 100644
--- a/tests/analytical_visualization/app.py
+++ b/tests/analytical_visualization/app.py
@@ -237,12 +237,15 @@ with st.sidebar.expander("Parallelism", expanded=True):
                 "`pe_hbm_gb` or reducing `s_kv`."
             )
         else:
-            # Compound key: min latency, then fewer PEs, then lower HBM %.
-            # Prefer smaller-footprint configs when they tie on latency.
+            # Smallest-fit Pareto point: fewest PEs first, then lowest
+            # HBM utilization, then fastest latency as final tiebreaker.
+            # Gives the smallest deployment that's still Pareto-optimal
+            # for the chosen scope (matches how the memory-min autosuggest
+            # thinks — but restricted to this scope's Pareto set).
             _sb_best = min(_sb_res.pareto_scores,
-                            key=lambda s: (s.total_latency_ns,
-                                            s.pes_used,
-                                            s.hbm_utilization))
+                            key=lambda s: (s.pes_used,
+                                            s.hbm_utilization,
+                                            s.total_latency_ns))
             st.session_state["cp"] = _snap(_sb_best.cp, _CP_OPTS)
             st.session_state["tp"] = _snap(_sb_best.tp, _TP_OPTS)
             st.session_state["pp"] = _snap(_sb_best.pp, _PP_OPTS)
@@ -584,11 +587,11 @@ with tab_layout:
                 "`s_kv`."
             )
         else:
-            # Compound tiebreaker: min latency, then fewer PEs, then lower HBM %.
+            # Smallest-fit Pareto point (see sidebar apply comment).
             _pl_best = min(_pl_res.pareto_scores,
-                            key=lambda s: (s.total_latency_ns,
-                                            s.pes_used,
-                                            s.hbm_utilization))
+                            key=lambda s: (s.pes_used,
+                                            s.hbm_utilization,
+                                            s.total_latency_ns))
             # Load the winning config into the sidebar's session state.
             st.session_state["cp"] = _pl_best.cp
             st.session_state["tp"] = _pl_best.tp