Only run fast testsystem potential energy tests to prevent travis timeout failures.
@@ -139,7 +139,7 @@ def check_potential_energy(system, positions):
# Clean up
del context, integrator
-def test_energy_all_testsystems(skip_slow_tests=False):
+def test_energy_all_testsystems(skip_slow_tests=True):
"""Testing computation of potential energy for all systems.
"""
testsystem_classes = get_all_subclasses(testsystems.TestSystem)
