diff --git a/.buildkite/test-nightly.yml b/.buildkite/test-nightly.yml
index 1e25cf2e0..88cb8dbb5 100644
--- a/.buildkite/test-nightly.yml
+++ b/.buildkite/test-nightly.yml
@@ -305,6 +305,51 @@ steps:
                       path: /mnt/hf-cache
                       type: DirectoryOrCreate
 
+      - label: ":full_moon: Omni · Perf Test · Multi-Replica"
+        key: nightly-omni-performance-multi-replicas
+        timeout_in_minutes: 180
+        commands:
+          - export BENCHMARK_DIR=tests/dfx/perf/results
+          - |
+            set +e
+            pytest -s -v tests/dfx/perf/scripts/run_benchmark.py --test-config-file tests/dfx/perf/tests/test_qwen3_omni_multi_replicas.json
+            EXIT=$$?
+            buildkite-agent artifact upload "tests/dfx/perf/results/*.json"
+            exit $$EXIT
+        agents:
+          queue: "mithril-h100-pool"
+        plugins:
+          - kubernetes:
+              podSpec:
+                containers:
+                  - image: 936637512419.dkr.ecr.us-west-2.amazonaws.com/vllm-ci-pull-through-cache/q9t5s3a7/vllm-ci-test-repo:$BUILDKITE_COMMIT
+                    resources:
+                      limits:
+                        nvidia.com/gpu: 3
+                    volumeMounts:
+                      - name: devshm
+                        mountPath: /dev/shm
+                      - name: hf-cache
+                        mountPath: /root/.cache/huggingface
+                    env:
+                      - name: HF_HOME
+                        value: /root/.cache/huggingface
+                      - name: HF_TOKEN
+                        valueFrom:
+                          secretKeyRef:
+                            name: hf-token-secret
+                            key: token
+                nodeSelector:
+                  node.kubernetes.io/instance-type: gpu-h100-sxm
+                volumes:
+                  - name: devshm
+                    emptyDir:
+                      medium: Memory
+                  - name: hf-cache
+                    hostPath:
+                      path: /mnt/hf-cache
+                      type: DirectoryOrCreate
+
 
       - label: ":full_moon: Omni · Multi-Replica Startup Test with 4x H100"
         timeout_in_minutes: 45
@@ -1188,6 +1233,7 @@ steps:
       - nightly-omni-performance-no-async-chunk
       - nightly-omni-performance-async-chunk
       - nightly-omni-performance-vllm-text
+      - nightly-omni-performance-multi-replicas
       - nightly-tts-performance
       - nightly-diffusion-x2iat-performance-qwen-image
       - nightly-diffusion-x2iat-performance-qwen-image-edit
@@ -1204,6 +1250,7 @@ steps:
       - buildkite-agent artifact download "tests/dfx/perf/results/*.json" . --step nightly-omni-performance-no-async-chunk
       - buildkite-agent artifact download "tests/dfx/perf/results/*.json" . --step nightly-omni-performance-async-chunk
       - buildkite-agent artifact download "tests/dfx/perf/results/*.json" . --step nightly-omni-performance-vllm-text
+      - buildkite-agent artifact download "tests/dfx/perf/results/*.json" . --step nightly-omni-performance-multi-replicas
       - buildkite-agent artifact download "tests/dfx/perf/results/*.json" . --step nightly-diffusion-x2iat-performance-qwen-image
       - buildkite-agent artifact download "tests/dfx/perf/results/*.json" . --step nightly-diffusion-x2iat-performance-qwen-image-edit
       - buildkite-agent artifact download "tests/dfx/perf/results/*.json" . --step nightly-diffusion-x2iat-performance-qwen-image-edit-2509
diff --git a/tests/dfx/perf/tests/test_qwen3_omni_multi_replicas.json b/tests/dfx/perf/tests/test_qwen3_omni_multi_replicas.json
new file mode 100644
index 000000000..0e7cb63f7
--- /dev/null
+++ b/tests/dfx/perf/tests/test_qwen3_omni_multi_replicas.json
@@ -0,0 +1,115 @@
+[
+    {
+        "test_name": "test_qwen3_omni_3gpu_replica2",
+        "server_params": {
+            "model": "Qwen/Qwen3-Omni-30B-A3B-Instruct",
+            "stage_overrides": {
+                "1": {"num_replicas": 2, "devices": "1,2"},
+                "2": {"num_replicas": 2, "devices": "1,2"}
+            },
+            "extra_cli_args": [
+                "--async-chunk"
+            ]
+        },
+        "benchmark_params": [
+            {
+                "dataset_name": "random",
+                "backend": "openai-chat-omni",
+                "endpoint": "/v1/chat/completions",
+                "num_prompts": [128, 128, 128, 128],
+                "max_concurrency": [8, 16, 24, 32],
+                "random_input_len": 2500,
+                "random_output_len": 900,
+                "ignore_eos": true,
+                "percentile-metrics": "ttft,tpot,itl,e2el,audio_rtf,audio_ttfp,audio_duration",
+                "baseline": {
+                    "mean_ttft_ms": [1000, 2000, 3000, 4000],
+                    "mean_tpot_ms": [200, 200, 200, 200],
+                    "mean_audio_ttfp_ms": [10000, 15000, 20000, 25000],
+                    "mean_audio_rtf": [1.5, 1.5, 1.5, 1.5]
+                }
+            },
+            {
+                "dataset_name": "random-mm",
+                "backend": "openai-chat-omni",
+                "endpoint": "/v1/chat/completions",
+                "num_prompts": [10],
+                "request_rate": [0.1],
+                "random_input_len": 100,
+                "random_output_len": 100,
+                "random_range_ratio": 0.0,
+                "ignore_eos": true,
+                "random_mm_base_items_per_request": 1,
+                "random_mm_num_mm_items_range_ratio": 0.5,
+                "random_mm_limit_mm_per_prompt": {
+                    "audio": 1
+                },
+                "random_mm_bucket_config": {
+                    "(0, 60, 3)": 1.0
+                },
+                "percentile-metrics": "ttft,tpot,itl,e2el,audio_rtf,audio_ttfp,audio_duration",
+                "baseline": {
+                    "mean_ttft_ms": [2000],
+                    "mean_audio_ttfp_ms": [2000],
+                    "mean_audio_rtf": [0.25]
+                }
+            },
+            {
+                "dataset_name": "random-mm",
+                "backend": "openai-chat-omni",
+                "endpoint": "/v1/chat/completions",
+                "num_prompts": [40],
+                "request_rate": [0.5],
+                "random_input_len": 100,
+                "random_output_len": 100,
+                "random_range_ratio": 0.0,
+                "ignore_eos": true,
+                "random_mm_base_items_per_request": 2,
+                "random_mm_num_mm_items_range_ratio": 0.5,
+                "random_mm_limit_mm_per_prompt": {
+                    "image": 1,
+                    "video": 1
+                },
+                "random_mm_bucket_config": {
+                    "(256, 256, 1)": 0.5,
+                    "(720, 1280, 2)": 0.5
+                },
+                "percentile-metrics": "ttft,tpot,itl,e2el,audio_rtf,audio_ttfp,audio_duration",
+                "baseline": {
+                    "mean_ttft_ms": [6000],
+                    "mean_audio_ttfp_ms": [6000],
+                    "mean_audio_rtf": [0.7]
+                }
+            },
+            {
+                "dataset_name": "random-mm",
+                "backend": "openai-chat-omni",
+                "endpoint": "/v1/chat/completions",
+                "num_prompts": [100],
+                "request_rate": [1.0],
+                "random_input_len": 100,
+                "random_output_len": 100,
+                "random_range_ratio": 0.0,
+                "ignore_eos": true,
+                "random_mm_base_items_per_request": 3,
+                "random_mm_num_mm_items_range_ratio": 0.5,
+                "random_mm_limit_mm_per_prompt": {
+                    "image": 1,
+                    "video": 1,
+                    "audio": 1
+                },
+                "random_mm_bucket_config": {
+                    "(256, 256, 1)": 0.34,
+                    "(720, 1280, 2)": 0.33,
+                    "(0, 60, 3)": 0.33
+                },
+                "percentile-metrics": "ttft,tpot,itl,e2el,audio_rtf,audio_ttfp,audio_duration",
+                "baseline": {
+                    "mean_ttft_ms": [12000],
+                    "mean_audio_ttfp_ms": [12000],
+                    "mean_audio_rtf": [1.0]
+                }
+            }
+        ]
+    }
+]
diff --git a/vllm_omni/config/stage_config.py b/vllm_omni/config/stage_config.py
index c459ecabe..7c17cf7ce 100644
--- a/vllm_omni/config/stage_config.py
+++ b/vllm_omni/config/stage_config.py
@@ -942,7 +942,7 @@ class StageConfig:
 
         # CLI overrides take precedence over YAML defaults
         for key, value in self.runtime_overrides.items():
-            if value is not None and key not in ("devices", "max_batch_size"):
+            if value is not None and key not in ("devices", "max_batch_size", "num_replicas"):
                 engine_args[key] = value
 
         # Build runtime config from YAML defaults + CLI overrides
@@ -950,6 +950,8 @@ class StageConfig:
         runtime.setdefault("process", True)
         if self.runtime_overrides.get("devices") is not None:
             runtime["devices"] = self.runtime_overrides["devices"]
+        if self.runtime_overrides.get("num_replicas") is not None:
+            runtime["num_replicas"] = self.runtime_overrides["num_replicas"]
 
         # Legacy compat: migrate runtime.max_batch_size → engine_args.max_num_seqs
         legacy_mbs = runtime.pop("max_batch_size", None)
diff --git a/vllm_omni/deploy/qwen3_omni_moe_multi_replicas.yaml b/vllm_omni/deploy/qwen3_omni_moe_multi_replicas.yaml
index 791e29a8d..900c9e4bb 100644
--- a/vllm_omni/deploy/qwen3_omni_moe_multi_replicas.yaml
+++ b/vllm_omni/deploy/qwen3_omni_moe_multi_replicas.yaml
@@ -23,7 +23,11 @@ connectors:
 
 stages:
   - stage_id: 0
+    max_num_batched_tokens: 32768
+    max_num_seqs: 64
     gpu_memory_utilization: 0.9
+    trust_remote_code: true
+    enable_prefix_caching: false
     devices: "0"
     default_sampling_params:
       temperature: 0.4
@@ -34,7 +38,11 @@ stages:
       repetition_penalty: 1.05
 
   - stage_id: 1
+    max_num_batched_tokens: 32768
+    max_num_seqs: 64
     gpu_memory_utilization: 0.6
+    trust_remote_code: true
+    enable_prefix_caching: false
     devices: "1,2"
     num_replicas: 2
     input_connectors:
@@ -47,11 +55,13 @@ stages:
       repetition_penalty: 1.05
 
   - stage_id: 2
-    gpu_memory_utilization: 0.1
-    max_num_seqs: 1
-    enforce_eager: true
-    async_scheduling: false
     max_num_batched_tokens: 51200
+    max_num_seqs: 64
+    gpu_memory_utilization: 0.1
+    enforce_eager: true
+    trust_remote_code: true
+    enable_prefix_caching: false
+    async_scheduling: false
     devices: "1,2"
     num_replicas: 2
     input_connectors:
@@ -70,20 +80,16 @@ platforms:
       - stage_id: 0
         gpu_memory_utilization: 0.6
         tensor_parallel_size: 2
+        max_num_batched_tokens: 8192
         devices: "0,1"
       - stage_id: 1
         gpu_memory_utilization: 0.6
-        enforce_eager: true
+        max_num_batched_tokens: 8192
         devices: "2"
       - stage_id: 2
         gpu_memory_utilization: 0.3
         devices: "2"
 
-  rocm:
-    stages:
-      - stage_id: 0
-        enforce_eager: true
-
   xpu:
     stages:
       - stage_id: 0