diff --git a/tests/test_stream.py b/tests/test_stream.py
index 606e1a3..e531832 100644
--- a/tests/test_stream.py
+++ b/tests/test_stream.py
@@ -372,8 +372,8 @@ def test_map_with_more_concurrency_than_elements(
                 func,
             ]
             for ordered, order_mutation, expected_duration in [
-                (True, identity, 0.3),
-                (False, sorted, 0.21),
+                (True, identity, 3),
+                (False, sorted, 2.1),
             ]
             for operation, func in [
                 (Stream.foreach, time.sleep),
@@ -391,7 +391,7 @@ def test_mapping_ordering(
         operation,
         func,
     ):
-        seconds = [0.1, 0.01, 0.2]
+        seconds = [1, 0.1, 2]
         duration, res = timestream(
             operation(Stream(seconds), func, ordered=ordered, concurrency=2)
         )
@@ -405,7 +405,7 @@ def test_mapping_ordering(
             duration,
             expected_duration,
             msg=f"{'ordered' if ordered else 'unordered'} `{operation}` should reflect that unordering improves runtime by avoiding bottlenecks",
-            delta=0.04,
+            delta=0.01,
         )
 
     @parameterized.expand(