diff --git a/scripts/frank-default-large.env b/scripts/frank-default-large.env
index 068c877..57636a1 100644
--- a/scripts/frank-default-large.env
+++ b/scripts/frank-default-large.env
@@ -48,8 +48,8 @@ LISTEN_PORT=52625
 # budget. KV at 262144 x 64 KiB/cell is ~16 GiB.
 CTX_SIZE=262144
 PARALLEL=1
-BATCH_SIZE=2048
-UBATCH_SIZE=2048
+BATCH_SIZE=16384
+UBATCH_SIZE=8192
 CACHE_TYPE_K=f16
 CACHE_TYPE_V=f16
 CTX_CHECKPOINTS=16