diff --git a/experiments/910c/dsv4_910c_vllm_tp_dp_matrix/config.env b/experiments/910c/dsv4_910c_vllm_tp_dp_matrix/config.env
index 83290d5..73d8868 100644
--- a/experiments/910c/dsv4_910c_vllm_tp_dp_matrix/config.env
+++ b/experiments/910c/dsv4_910c_vllm_tp_dp_matrix/config.env
@@ -130,6 +130,8 @@ DSV4_COMPILATION_CONFIG="${DSV4_COMPILATION_CONFIG:-{\"cudagraph_mode\": \"FULL_
 DSV4_ADDITIONAL_CONFIG="${DSV4_ADDITIONAL_CONFIG:-{\"ascend_compilation_config\":{\"enable_npugraph_ex\":true,\"enable_static_kernel\":false},\"enable_cpu_binding\": true,\"multistream_overlap_shared_expert\":true}}"
 DSV4_ENABLE_EXPERT_PARALLEL="${DSV4_ENABLE_EXPERT_PARALLEL:-1}"
 DSV4_ENABLE_ASYNC_SCHEDULING="${DSV4_ENABLE_ASYNC_SCHEDULING:-1}"
+# MTP speculative decoding (disabled for fair comparison with H20 which has no MTP).
+DSV4_ENABLE_MTP="${DSV4_ENABLE_MTP:-0}"
 
 # Model-loader extra config (multithread load, 128 threads) to speed up 280GiB load.
 DSV4_MODEL_LOADER_EXTRA_CONFIG="${DSV4_MODEL_LOADER_EXTRA_CONFIG:-{\"enable_multithread_load\": \"true\", \"num_threads\": 128}}"
diff --git a/experiments/910c/dsv4_910c_vllm_tp_dp_matrix/start_vllm_docker.sh b/experiments/910c/dsv4_910c_vllm_tp_dp_matrix/start_vllm_docker.sh
index 33e8afd..50f4a47 100755
--- a/experiments/910c/dsv4_910c_vllm_tp_dp_matrix/start_vllm_docker.sh
+++ b/experiments/910c/dsv4_910c_vllm_tp_dp_matrix/start_vllm_docker.sh
@@ -95,7 +95,9 @@ fi
 
 # JSON-bearing args. Quoted as single strings so vllm parses each as one argv.
 SERVER_ARGS+=(--model-loader-extra-config "$DSV4_MODEL_LOADER_EXTRA_CONFIG")
-SERVER_ARGS+=(--speculative-config "$DSV4_SPEC_CONFIG")
+if [[ "${DSV4_ENABLE_MTP:-0}" == "1" ]]; then
+  SERVER_ARGS+=(--speculative-config "$DSV4_SPEC_CONFIG")
+fi
 SERVER_ARGS+=(--compilation-config "$DSV4_COMPILATION_CONFIG")
 SERVER_ARGS+=(--additional-config "$DSV4_ADDITIONAL_CONFIG")