diff --git a/src/otx/algorithms/detection/configs/instance_segmentation/convnext_maskrcnn/template_experimental.yaml b/src/otx/algorithms/detection/configs/instance_segmentation/convnext_maskrcnn/template_experimental.yaml
index 44821039d86..b12d8f7e5fb 100644
--- a/src/otx/algorithms/detection/configs/instance_segmentation/convnext_maskrcnn/template_experimental.yaml
+++ b/src/otx/algorithms/detection/configs/instance_segmentation/convnext_maskrcnn/template_experimental.yaml
@@ -28,7 +28,7 @@ hyper_parameters:
         default_value: 2
         auto_hpo_state: POSSIBLE
       inference_batch_size:
-        default_value: 2
+        default_value: 1
       learning_rate:
         default_value: 0.001
         auto_hpo_state: POSSIBLE
diff --git a/src/otx/algorithms/detection/configs/instance_segmentation/efficientnetb2b_maskrcnn/template.yaml b/src/otx/algorithms/detection/configs/instance_segmentation/efficientnetb2b_maskrcnn/template.yaml
index 272a648c551..f825fbac61d 100644
--- a/src/otx/algorithms/detection/configs/instance_segmentation/efficientnetb2b_maskrcnn/template.yaml
+++ b/src/otx/algorithms/detection/configs/instance_segmentation/efficientnetb2b_maskrcnn/template.yaml
@@ -29,7 +29,7 @@ hyper_parameters:
         default_value: 4
         auto_hpo_state: POSSIBLE
       inference_batch_size:
-        default_value: 4
+        default_value: 1
       learning_rate:
         default_value: 0.015
         auto_hpo_state: POSSIBLE