diff --git a/instill/helpers/const.py b/instill/helpers/const.py
index cf1aae7..f2b4f91 100644
--- a/instill/helpers/const.py
+++ b/instill/helpers/const.py
@@ -125,8 +125,8 @@ class ImageToImageInput:
         "PYTHONPATH": os.getcwd(),
     },
 }
-DEFAULT_MAX_ONGOING_REQUESTS = 6
-DEFAULT_MAX_QUEUED_REQUESTS = 100
+DEFAULT_MAX_ONGOING_REQUESTS = 4
+DEFAULT_MAX_QUEUED_REQUESTS = 1000
 
 RAM_MINIMUM_RESERVE = 1  # GB
 RAM_UPSCALE_FACTOR = 1.25
diff --git a/instill/helpers/ray_config.py b/instill/helpers/ray_config.py
index 274bda8..dc55b01 100644
--- a/instill/helpers/ray_config.py
+++ b/instill/helpers/ray_config.py
@@ -84,6 +84,8 @@ def __init__(self, deployable: Deployment) -> None:
         if is_high_scale_model is not None and is_high_scale_model.lower() == "true":
             self._update_upscale_delay(120)
             self._update_downscale_delay(600)
+            self._update_target_ongoing_requests(4)
+            self._update_max_concurrent_requests(6)
 
     def _determine_vram_usage(self, model_path: str, total_vram: str):
         warn(
@@ -189,6 +191,21 @@ def _update_max_replicas(self, num_replicas: int):
 
         return self
 
+    def _update_target_ongoing_requests(self, target_ongoing_requests: int):
+        self._autoscaling_config["target_num_ongoing_requests_per_replica"] = (
+            target_ongoing_requests
+        )
+        self._autoscaling_config["target_ongoing_requests"] = target_ongoing_requests
+        self._deployment = self._deployment.options(
+            autoscaling_config=self._autoscaling_config
+        )
+
+    def _update_max_concurrent_requests(self, max_concurrent_requests: int):
+        self._deployment = self._deployment.options(
+            max_concurrent_queries=max_concurrent_requests,
+            max_ongoing_requests=max_concurrent_requests,
+        )
+
     def _update_upscale_delay(self, upscale_delay_s: int):
         self._autoscaling_config["upscale_delay_s"] = upscale_delay_s
         self._deployment = self._deployment.options(