diff --git a/examples/rosenbrock.py b/examples/rosenbrock.py
index 8b55d0b..d2a117f 100644
--- a/examples/rosenbrock.py
+++ b/examples/rosenbrock.py
@@ -630,10 +630,10 @@ def run_example(
 
     # Define parameters.
     ndim = 10
-    nchains = 1000
-    samples_per_chain = 10**8
+    nchains = 200
+    samples_per_chain = 10**7
     nburn = 5000
-    chain_iterations = 1000
+    chain_iterations = 500
 
     # flow_str = "RealNVP"
     flow_str = "RQSpline"