diff --git a/scripts/frank-default-small.env b/scripts/frank-default-small.env
index 6e39873..d9a5758 100644
--- a/scripts/frank-default-small.env
+++ b/scripts/frank-default-small.env
@@ -41,11 +41,11 @@ CACHE_TYPE_V=f16
 
 VERBOSITY=4
 # Store SWA/context checkpoints in RAM to hold peak GPU memory down.
-CTX_CHECKPOINTS=4
+CTX_CHECKPOINTS=2
 
-# Big prefill batches (ubatch 1024, batch 4096).
+# Big prefill batches (ubatch 1536, batch 4096).
 BATCH_SIZE=4096
-UBATCH_SIZE=1024
+UBATCH_SIZE=1536
 
 # Eager RAM load (MoE experts on CPU; ~31 GB RAM).
 NO_MMAP=1
diff --git a/scripts/serve-frank-small.sh b/scripts/serve-frank-small.sh
index a8d11bc..5d29f20 100755
--- a/scripts/serve-frank-small.sh
+++ b/scripts/serve-frank-small.sh
@@ -40,7 +40,7 @@ fi
 : "${N_GPU_LAYERS:=all}"
 : "${BATCH_SIZE:=4096}"
 : "${UBATCH_SIZE:=1024}"
-: "${CTX_CHECKPOINTS:=4}"
+: "${CTX_CHECKPOINTS:=2}"
 : "${NO_MMAP:=1}"
 : "${TEMPERATURE:=1.0}"
 : "${TOP_K:=20}"