diff --git a/scripts/frank-default-small.env b/scripts/frank-default-small.env
index 652000f..2257cb0 100644
--- a/scripts/frank-default-small.env
+++ b/scripts/frank-default-small.env
@@ -15,5 +15,11 @@ CACHE_TYPE_V=f16
 N_CPU_MOE=40
 # Every non-expert tensor (attention, norms, embedding, LM head) goes to GPU.
 N_GPU_LAYERS=all
+# Larger batches for prefill throughput. The bigger physical batch grows GPU
+# activation buffers; ctx-checkpoints parks attention checkpoints in RAM to
+# hold peak GPU memory down so the larger ubatch fits without OOM.
+BATCH_SIZE=3072
+UBATCH_SIZE=1536
+CTX_CHECKPOINTS=4
 THREADS=8
 THREADS_HTTP=8
\ No newline at end of file
diff --git a/scripts/serve-llama-frank-small.sh b/scripts/serve-llama-frank-small.sh
index 5fe8969..4dcbe9b 100755
--- a/scripts/serve-llama-frank-small.sh
+++ b/scripts/serve-llama-frank-small.sh
@@ -32,6 +32,9 @@ fi
 : "${CACHE_TYPE_V:=f16}"
 : "${N_CPU_MOE:=40}"     # all 40 layers: MoE expert weights stay on CPU
 : "${N_GPU_LAYERS:=all}" # every non-expert tensor goes to GPU
+: "${BATCH_SIZE:=2048}"
+: "${UBATCH_SIZE:=512}"
+: "${CTX_CHECKPOINTS:=0}"
 : "${THREADS:=8}"        # 7700X physical cores
 : "${THREADS_HTTP:=8}"
 
@@ -60,6 +63,9 @@ exec "$LLAMA_SERVER" \
     --parallel "$PARALLEL" \
     --n-cpu-moe "$N_CPU_MOE" \
     --gpu-layers "$N_GPU_LAYERS" \
+    --batch-size "$BATCH_SIZE" \
+    --ubatch-size "$UBATCH_SIZE" \
+    --ctx-checkpoints "$CTX_CHECKPOINTS" \
     --threads "$THREADS" \
     --threads-http "$THREADS_HTTP" \
     --alias "$ALIAS" \