diff --git a/tests/test_utils_opmsg.py b/tests/test_utils_opmsg.py
index b5d95179e..d552db5b1 100644
--- a/tests/test_utils_opmsg.py
+++ b/tests/test_utils_opmsg.py
@@ -22,16 +22,17 @@ def ioc():
     """
     def run_op_prefix(prefix: str):
         with MorIOC(prefix) as mor:
+            # Crée tous les PVs nécessaires
             mor.host(
                 STATUS={"type": "enum", "enums": ["OFFLINE", "PREPARATION", "REMOTE", "ATTENDED"]},
                 **{"STATUS-DATE": str},
                 **{f"OP-DATE{i}": str for i in range(N_MSG_HISTORY)},
                 **{f"OP-MSG{i}": str for i in range(N_MSG_HISTORY)},
                 **{"OP-MSG-tmp": str},
-                **{"OP-MSG-TMP": str},
+                **{"OP-MSG-TMP": str},  # Les deux cas pour couvrir toutes les possibilités
             )
 
-            # Seed une seule fois
+            # Initialise les valeurs
             mor.serve(
                 STATUS="OFFLINE",
                 **{"STATUS-DATE": "2024-01-01 00:00:00"},
@@ -43,10 +44,10 @@ def ioc():
 
             while True:
                 mor.serve()
-                time.sleep(0.02)
+                time.sleep(0.1)
 
     def run_status_prefix(beamline: str):
-        with MorIOC(f"SF-STATUS-{beamline}") as mor:
+        with MorIOC(f"STATUS-{beamline}") as mor:
             mor.host(
                 CATEGORY={"type": "enum", "enums": ["USER", "MD", "SD", "ACCESS", "DOWN"]},
                 DOWNTIME=str,
@@ -54,48 +55,32 @@ def ioc():
             mor.serve(CATEGORY="USER", DOWNTIME="00:00:00")
             while True:
                 mor.serve()
-                time.sleep(0.02)
+                time.sleep(0.1)
 
     threads = []
+    
+    # Crée les IOCs pour tous les IDs
     for ID in IDS.values():
         prefix = f"SF-OP:{ID}-MSG"
         t = threading.Thread(target=run_op_prefix, args=(prefix,), daemon=True)
         t.start()
         threads.append(t)
-
+    
+    # Crée les IOCs pour les beamlines
     for bl in BEAMLINES:
         t = threading.Thread(target=run_status_prefix, args=(bl,), daemon=True)
         t.start()
         threads.append(t)
-
+    
     return threads
 
 @pytest.fixture(scope="module", autouse=True)
 def run_all_iocs():
     threads = ioc()
-    time.sleep(0.5)
+    time.sleep(1.0)  
     yield
 
 
-@pytest.fixture(scope="module", autouse=True)
-def run_all_iocs():
-    threads = ioc()
-    # Short boot delay to ensure IOCs are listening
-    time.sleep(0.3)
-    yield
-    # Daemon threads exit with pytest
-
-
-# Autouse fixture to start IOC once per module
-@pytest.fixture(scope="module", autouse=True)
-def run_all_iocs():
-    threads = ioc()
-    # Small boot delay so all IOCs are ready before the tests run
-    time.sleep(0.3)
-    yield
-    # Daemon threads end with pytest
-
-
 # Tests: OperationMessageStatus
 class TestOperationMessageStatus:
     @pytest.fixture