diff --git a/tests/conftest.py b/tests/conftest.py
index 397d9124e..d7f140007 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -366,3 +366,10 @@ def cluster_handler_factory(
         return ch
 
     return cluster_handler_factory
+
+
+def pytest_collection_modifyitems(config, items):
+    """Add the looptime marker to all tests except the test_async.py file."""
+    for item in items:
+        if "test_async_.py" not in item.nodeid:
+            item.add_marker(pytest.mark.looptime)
diff --git a/tests/test_climate.py b/tests/test_climate.py
index 5df786db2..c8b859aee 100644
--- a/tests/test_climate.py
+++ b/tests/test_climate.py
@@ -337,7 +337,6 @@ async def test_climate_hvac_action_running_state(
     assert len(subscriber.mock_calls) == 2 * 6
 
 
-@pytest.mark.looptime
 async def test_sinope_time(
     zha_gateway: Gateway,
 ):
diff --git a/tests/test_debouncer.py b/tests/test_debouncer.py
index 057b5e373..44150752b 100644
--- a/tests/test_debouncer.py
+++ b/tests/test_debouncer.py
@@ -12,7 +12,6 @@
 _LOGGER = logging.getLogger(__name__)
 
 
-@pytest.mark.looptime
 async def test_immediate_works(zha_gateway: Gateway) -> None:
     """Test immediate works."""
     calls: list[None] = []
@@ -67,7 +66,6 @@ async def test_immediate_works(zha_gateway: Gateway) -> None:
     assert debouncer._job.target == debouncer.function
 
 
-@pytest.mark.looptime
 async def test_immediate_works_with_schedule_call(zha_gateway: Gateway) -> None:
     """Test immediate works with scheduled calls."""
     calls: list[None] = []
@@ -168,7 +166,6 @@ async def test_immediate_works_with_executor_function(zha_gateway: Gateway) -> N
     debouncer.async_cancel()
 
 
-@pytest.mark.looptime
 async def test_immediate_works_with_passed_callback_function_raises(
     zha_gateway: Gateway,
 ) -> None:
@@ -232,7 +229,6 @@ def _append_and_raise() -> None:
     assert debouncer._job.target == debouncer.function
 
 
-@pytest.mark.looptime
 async def test_immediate_works_with_passed_coroutine_raises(
     zha_gateway: Gateway,
 ) -> None:
@@ -296,7 +292,6 @@ async def _append_and_raise() -> None:
     assert debouncer._job.target == debouncer.function
 
 
-@pytest.mark.looptime
 async def test_not_immediate_works(zha_gateway: Gateway) -> None:
     """Test immediate works."""
     calls: list[None] = []
@@ -348,7 +343,6 @@ async def test_not_immediate_works(zha_gateway: Gateway) -> None:
     assert debouncer._job.target == debouncer.function
 
 
-@pytest.mark.looptime
 async def test_not_immediate_works_schedule_call(zha_gateway: Gateway) -> None:
     """Test immediate works with schedule call."""
     calls: list[None] = []
@@ -404,7 +398,6 @@ async def test_not_immediate_works_schedule_call(zha_gateway: Gateway) -> None:
     assert debouncer._job.target == debouncer.function
 
 
-@pytest.mark.looptime
 async def test_immediate_works_with_function_swapped(zha_gateway: Gateway) -> None:
     """Test immediate works and we can change out the function."""
     calls: list[None] = []
@@ -501,7 +494,6 @@ async def _func() -> None:
     assert debouncer._timer_task is None
 
 
-@pytest.mark.looptime
 async def test_background(zha_gateway: Gateway) -> None:
     """Test background tasks are created when background is True."""
     calls: list[None] = []
diff --git a/tests/test_device.py b/tests/test_device.py
index b9896e0a5..154670fca 100644
--- a/tests/test_device.py
+++ b/tests/test_device.py
@@ -103,7 +103,6 @@ async def _send_time_changed(zha_gateway: Gateway, seconds: int):
     "zha.zigbee.cluster_handlers.general.BasicClusterHandler.async_initialize",
     new=mock.AsyncMock(),
 )
-@pytest.mark.looptime
 async def test_check_available_success(
     zha_gateway: Gateway,
     caplog: pytest.LogCaptureFixture,
@@ -200,7 +199,6 @@ def _update_last_seen(*args, **kwargs):  # pylint: disable=unused-argument
     "zha.zigbee.cluster_handlers.general.BasicClusterHandler.async_initialize",
     new=mock.AsyncMock(),
 )
-@pytest.mark.looptime
 async def test_check_available_unsuccessful(
     zha_gateway: Gateway,
 ) -> None:
@@ -272,7 +270,6 @@ async def test_check_available_unsuccessful(
     "zha.zigbee.cluster_handlers.general.BasicClusterHandler.async_initialize",
     new=mock.AsyncMock(),
 )
-@pytest.mark.looptime
 async def test_check_available_no_basic_cluster_handler(
     zha_gateway: Gateway,
     caplog: pytest.LogCaptureFixture,
diff --git a/tests/test_device_tracker.py b/tests/test_device_tracker.py
index ae0e5d492..1612f937a 100644
--- a/tests/test_device_tracker.py
+++ b/tests/test_device_tracker.py
@@ -4,7 +4,6 @@
 import time
 from unittest.mock import AsyncMock
 
-import pytest
 import zigpy.profiles.zha
 from zigpy.zcl.clusters import general
 
@@ -24,7 +23,6 @@
 from zha.application.registries import SMARTTHINGS_ARRIVAL_SENSOR_DEVICE_TYPE
 
 
-@pytest.mark.looptime
 async def test_device_tracker(
     zha_gateway: Gateway,
 ) -> None:
diff --git a/tests/test_fan.py b/tests/test_fan.py
index e3b2766ab..8bc96c5f5 100644
--- a/tests/test_fan.py
+++ b/tests/test_fan.py
@@ -274,7 +274,6 @@ async def async_set_preset_mode(
     "zigpy.zcl.clusters.hvac.Fan.write_attributes",
     new=AsyncMock(return_value=zcl_f.WriteAttributesResponse.deserialize(b"\x00")[0]),
 )
-@pytest.mark.looptime
 async def test_zha_group_fan_entity(
     zha_gateway: Gateway,
 ):
diff --git a/tests/test_gateway.py b/tests/test_gateway.py
index 6d06f1c6e..63ad41988 100644
--- a/tests/test_gateway.py
+++ b/tests/test_gateway.py
@@ -476,7 +476,6 @@ async def test_gateway_initialize_bellows_thread(
 
 
 @pytest.mark.parametrize("radio_concurrency", [1, 2, 8])
-@pytest.mark.looptime
 async def test_startup_concurrency_limit(
     radio_concurrency: int,
     zigpy_app_controller: ControllerApplication,
@@ -694,7 +693,6 @@ def test_gateway_connection_lost(zha_gateway: Gateway) -> None:
     )
 
 
-@pytest.mark.looptime
 async def test_pollers_skip(
     zha_gateway: Gateway,
     caplog: pytest.LogCaptureFixture,
diff --git a/tests/test_light.py b/tests/test_light.py
index 42cd27141..952994238 100644
--- a/tests/test_light.py
+++ b/tests/test_light.py
@@ -276,7 +276,6 @@ async def eWeLink_light_mock(
     return zha_device
 
 
-@pytest.mark.looptime
 async def test_light_refresh(
     zha_gateway: Gateway,
 ):
@@ -360,7 +359,6 @@ async def test_light_refresh(
     "device, reporting",
     [(LIGHT_ON_OFF, (1, 0, 0)), (LIGHT_LEVEL, (1, 1, 0)), (LIGHT_COLOR, (1, 1, 3))],
 )
-@pytest.mark.looptime
 async def test_light(
     zha_gateway: Gateway,
     device: dict,
@@ -594,7 +592,6 @@ async def _async_shift_time(zha_gateway: Gateway):
     await zha_gateway.async_block_till_done()
 
 
-@pytest.mark.looptime
 async def async_test_level_on_off_from_client(
     zha_gateway: Gateway,
     on_off_cluster: general.OnOff,
@@ -746,7 +743,6 @@ async def async_test_flash_from_client(
     "zigpy.zcl.clusters.general.OnOff.request",
     new=AsyncMock(return_value=[sentinel.data, zcl_f.Status.SUCCESS]),
 )
-@pytest.mark.looptime
 async def test_zha_group_light_entity(
     zha_gateway: Gateway,
 ) -> None:
@@ -1890,7 +1886,6 @@ async def test_on_with_off_color(zha_gateway: Gateway) -> None:
     "zigpy.zcl.clusters.general.LevelControl.request",
     new=AsyncMock(return_value=[sentinel.data, zcl_f.Status.SUCCESS]),
 )
-@pytest.mark.looptime
 async def test_group_member_assume_state(zha_gateway: Gateway) -> None:
     """Test the group members assume state function."""
 
diff --git a/tests/test_sensor.py b/tests/test_sensor.py
index 5111c8b0c..f1eebd9f3 100644
--- a/tests/test_sensor.py
+++ b/tests/test_sensor.py
@@ -613,7 +613,6 @@ def assert_state(entity: PlatformEntity, state: Any, unit_of_measurement: str) -
     assert entity.info_object.unit == unit_of_measurement
 
 
-@pytest.mark.looptime
 async def test_electrical_measurement_init(
     zha_gateway: Gateway,
     caplog: pytest.LogCaptureFixture,
@@ -1026,7 +1025,6 @@ async def test_elec_measurement_sensor_type(
     assert entity.state["measurement_type"] == expected_type
 
 
-@pytest.mark.looptime
 async def test_elec_measurement_sensor_polling(zha_gateway: Gateway) -> None:
     """Test ZHA electrical measurement sensor polling."""
 
@@ -1276,7 +1274,6 @@ async def test_last_feeding_size_sensor_v2(zha_gateway: Gateway) -> None:
     assert_state(entity, 5.0, "g")
 
 
-@pytest.mark.looptime
 async def test_device_counter_sensors(zha_gateway: Gateway) -> None:
     """Test coordinator counter sensor."""
 
@@ -1317,7 +1314,6 @@ async def test_device_counter_sensors(zha_gateway: Gateway) -> None:
     assert len(zha_gateway.global_updater._update_listeners) == 3
 
 
-@pytest.mark.looptime
 async def test_device_unavailable_or_disabled_skips_entity_polling(
     zha_gateway: Gateway,
     caplog: pytest.LogCaptureFixture,
diff --git a/tests/test_siren.py b/tests/test_siren.py
index ff9bd2c32..746a79926 100644
--- a/tests/test_siren.py
+++ b/tests/test_siren.py
@@ -3,7 +3,6 @@
 import asyncio
 from unittest.mock import patch
 
-import pytest
 from zigpy.const import SIG_EP_PROFILE
 from zigpy.profiles import zha
 from zigpy.zcl.clusters import general, security
@@ -120,7 +119,6 @@ async def test_siren(zha_gateway: Gateway) -> None:
     assert entity.state["state"] is True
 
 
-@pytest.mark.looptime
 async def test_siren_timed_off(zha_gateway: Gateway) -> None:
     """Test zha siren platform."""
     zha_device, cluster = await siren_mock(zha_gateway)
diff --git a/tests/test_switch.py b/tests/test_switch.py
index 854e182b6..3cbdc7d38 100644
--- a/tests/test_switch.py
+++ b/tests/test_switch.py
@@ -220,7 +220,6 @@ async def test_switch(zha_gateway: Gateway) -> None:
     assert bool(entity.state["state"]) is True
 
 
-@pytest.mark.looptime
 async def test_zha_group_switch_entity(zha_gateway: Gateway) -> None:
     """Test the switch entity for a ZHA group."""
     device_switch_1 = await device_switch_1_mock(zha_gateway)