diff --git a/codes/experiment_v0.2/config.py b/codes/experiment_v0.2/config.py
index 1a942b1..48c4067 100644
--- a/codes/experiment_v0.2/config.py
+++ b/codes/experiment_v0.2/config.py
@@ -25,4 +25,4 @@ CP_DIMS = [(1<<i, 1<<i) for i in range(9, 12)]
 MAJORANA_N = [(1<<i)-1 for i in range(4, 12)]
 
 # Batch sizes are the main speed knob; reduce CP batches first if memory is tight.
-BATCH = {"sphere": 32_768, "cp": 256, "majorana": 65_536}
+BATCH = {"sphere": 32_768, "cp": 128, "majorana": 65_536}