diff --git a/tests/conftest.py b/tests/conftest.py
index c3d5ac7..0e74eab 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -44,7 +44,7 @@ def simulation_config(request):
     return request.param
 
 
-@pytest.fixture(scope="session", params=[0.1, 0.5, 0.8])
+@pytest.fixture(scope="session", params=[0.1, 0.2])
 def lpt_scale_factor(request):
     return request.param
 
diff --git a/tests/test_against_fpm.py b/tests/test_against_fpm.py
index 1530733..c869b87 100644
--- a/tests/test_against_fpm.py
+++ b/tests/test_against_fpm.py
@@ -11,8 +11,8 @@ from jaxpm.utils import power_spectrum
 
 _TOLERANCE = 1e-4
 _PM_TOLERANCE = 1e-3
-_FIELD_RTOL = 1e-2
-_FIELD_ATOL = 1e-1
+_FIELD_RTOL = 1e-4
+_FIELD_ATOL = 1e-3
 
 
 @pytest.mark.single_device