diff --git a/test/thread/thread.condition/thread.condition.condvar/wait_for.pass.cpp b/test/thread/thread.condition/thread.condition.condvar/wait_for.pass.cpp
index 155b3537..6c94e721 100644
--- a/test/thread/thread.condition/thread.condition.condvar/wait_for.pass.cpp
+++ b/test/thread/thread.condition/thread.condition.condvar/wait_for.pass.cpp
@@ -50,7 +50,7 @@ void f()
     }
     else
     {
-        assert(t1 - t0 - milliseconds(250) < milliseconds(5));
+        assert(t1 - t0 - milliseconds(250) < milliseconds(10));
         assert(test2 == 0);
     }
     ++runs;
diff --git a/test/thread/thread.condition/thread.condition.condvar/wait_for_pred.pass.cpp b/test/thread/thread.condition/thread.condition.condvar/wait_for_pred.pass.cpp
index 50020063..930841df 100644
--- a/test/thread/thread.condition/thread.condition.condvar/wait_for_pred.pass.cpp
+++ b/test/thread/thread.condition/thread.condition.condvar/wait_for_pred.pass.cpp
@@ -58,7 +58,7 @@ void f()
     }
     else
     {
-        assert(t1 - t0 - milliseconds(250) < milliseconds(2));
+        assert(t1 - t0 - milliseconds(250) < milliseconds(10));
         assert(test2 == 0);
     }
     ++runs;
diff --git a/test/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/lock.pass.cpp b/test/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/lock.pass.cpp
index c0087b89..199f4d39 100644
--- a/test/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/lock.pass.cpp
+++ b/test/thread/thread.mutex/thread.mutex.requirements/thread.mutex.requirements.mutex/thread.mutex.recursive/lock.pass.cpp
@@ -37,7 +37,7 @@ void f()
     m.unlock();
     m.unlock();
     ns d = t1 - t0 - ms(250);
-    assert(d < ns(2500000));  // within 2.5ms
+    assert(d < ms(10));  // within 10ms
 }
 
 int main()
diff --git a/test/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/lock.pass.cpp b/test/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/lock.pass.cpp
index b00fa46e..6e5c6715 100644
--- a/test/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/lock.pass.cpp
+++ b/test/thread/thread.mutex/thread.mutex.requirements/thread.timedmutex.requirements/thread.timedmutex.recursive/lock.pass.cpp
@@ -37,7 +37,7 @@ void f()
     m.unlock();
     m.unlock();
     ns d = t1 - t0 - ms(250);
-    assert(d < ns(2500000));  // within 2.5ms
+    assert(d < ms(10));  // within 10ms
 }
 
 int main()