@@ -390,6 +390,10 @@ def test_learner_performance_is_invariant_under_scaling(learner_type, f, learner

     npoints = random.randrange(300, 500)

+    if learner_type is LearnerND:

+        # Because the LearnerND is slow

+        npoints //= 10

+

     for n in range(npoints):

         cxs, _ = control.ask(1)

         xs, _ = learner.ask(1)