diff --git a/services/api-server/src/simcore_service_api_server/api/routes/functions_routes.py b/services/api-server/src/simcore_service_api_server/api/routes/functions_routes.py
index 8ac3589e9f46..14cfcadbc294 100644
--- a/services/api-server/src/simcore_service_api_server/api/routes/functions_routes.py
+++ b/services/api-server/src/simcore_service_api_server/api/routes/functions_routes.py
@@ -474,7 +474,7 @@ async def _run_single_function(function_inputs: FunctionInputs) -> FunctionJobID
             for function_inputs in function_inputs_list
         ],
         reraise=False,
-        limit=10,
+        limit=1,
     )
 
     # Check if any tasks raised exceptions and raise the first one found