diff --git a/.buildkite/test-merge.yml b/.buildkite/test-merge.yml
index 7bee19319..5ee936337 100644
--- a/.buildkite/test-merge.yml
+++ b/.buildkite/test-merge.yml
@@ -174,7 +174,7 @@ steps:
                 pytest -s -v tests/engine/test_async_omni_engine_abort.py
         '
     agents:
-      queue: "gpu_4_queue" # g6.12xlarge instance on AWS, has 4 L4 GPU
+      queue: "gpu_1_queue" # g6.12xlarge instance on AWS, has 4 L4 GPU
     plugins:
       - docker#v5.2.0:
           image: public.ecr.aws/q9t5s3a7/vllm-ci-test-repo:$BUILDKITE_COMMIT
diff --git a/.buildkite/test-ready.yml b/.buildkite/test-ready.yml
index 89839a2d1..91ea92a5c 100644
--- a/.buildkite/test-ready.yml
+++ b/.buildkite/test-ready.yml
@@ -180,7 +180,7 @@ steps:
                 pytest -s -v tests/engine/test_async_omni_engine_abort.py
         '
     agents:
-      queue: "gpu_4_queue" # g6.12xlarge instance on AWS, has 4 L4 GPU
+      queue: "gpu_1_queue" # g6.12xlarge instance on AWS, has 4 L4 GPU
     plugins:
       - docker#v5.2.0:
           image: public.ecr.aws/q9t5s3a7/vllm-ci-test-repo:$BUILDKITE_COMMIT
@@ -271,7 +271,7 @@ steps:
               - 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: 2
+                    nvidia.com/gpu: 1
                 volumeMounts:
                   - name: devshm
                     mountPath: /dev/shm
diff --git a/tests/e2e/online_serving/test_mimo_audio.py b/tests/e2e/online_serving/test_mimo_audio.py
index 639c46a65..2fb63c1e4 100644
--- a/tests/e2e/online_serving/test_mimo_audio.py
+++ b/tests/e2e/online_serving/test_mimo_audio.py
@@ -95,7 +95,7 @@ def get_max_batch_size(size_type="few"):
 @pytest.mark.advanced_model
 @pytest.mark.core_model
 @pytest.mark.omni
-@hardware_test(res={"cuda": "L4", "rocm": "MI325"}, num_cards=2)
+@hardware_test(res={"cuda": "L4", "rocm": "MI325"}, num_cards=1)
 @pytest.mark.parametrize("omni_server", test_params, indirect=True)
 def test_audio_to_text_audio_001(omni_server, openai_client) -> None:
     """
@@ -128,7 +128,7 @@ def test_audio_to_text_audio_001(omni_server, openai_client) -> None:
 
 @pytest.mark.advanced_model
 @pytest.mark.omni
-@hardware_test(res={"cuda": "L4", "rocm": "MI325"}, num_cards=2)
+@hardware_test(res={"cuda": "L4", "rocm": "MI325"}, num_cards=1)
 @pytest.mark.parametrize("omni_server", test_params, indirect=True)
 def test_text_to_text_001(omni_server, openai_client) -> None:
     """