diff --git a/subprojects/gst-editing-services/tests/check/nle/complex.c b/subprojects/gst-editing-services/tests/check/nle/complex.c
index b7358fbc64..ffb73cd4d5 100644
--- a/subprojects/gst-editing-services/tests/check/nle/complex.c
+++ b/subprojects/gst-editing-services/tests/check/nle/complex.c
@@ -15,6 +15,7 @@ fill_pipeline_and_check (GstElement * comp, GList * segments,
   pipeline = gst_pipeline_new ("test_pipeline");
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
   fail_if (sink == NULL);
+  g_object_set (sink, "sync", FALSE, NULL);
 
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
@@ -563,6 +564,7 @@ GST_START_TEST (test_renegotiation)
 
 
   sink = gst_element_factory_make_or_warn ("fakeaudiosink", "sink");
+  g_object_set (sink, "sync", FALSE, NULL);
   audioconvert = gst_element_factory_make_or_warn ("audioconvert", "aconv");
 
   gst_bin_add_many (GST_BIN (pipeline), comp, audioconvert, sink, NULL);
diff --git a/subprojects/gst-editing-services/tests/check/nle/nlecomposition.c b/subprojects/gst-editing-services/tests/check/nle/nlecomposition.c
index 3607ddb3dc..6cb8eee606 100644
--- a/subprojects/gst-editing-services/tests/check/nle/nlecomposition.c
+++ b/subprojects/gst-editing-services/tests/check/nle/nlecomposition.c
@@ -54,6 +54,7 @@ GST_START_TEST (test_change_object_start_stop_in_current_stack)
   gst_element_set_state (comp, GST_STATE_READY);
 
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
+  g_object_set (sink, "sync", FALSE, NULL);
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
   gst_element_link (comp, sink);
@@ -218,6 +219,7 @@ GST_START_TEST (test_remove_last_object)
   gst_element_set_state (GST_ELEMENT (composition), GST_STATE_READY);
 
   fakesink = gst_element_factory_make ("fakeaudiosink", NULL);
+  g_object_set (fakesink, "sync", FALSE, NULL);
   gst_bin_add_many (GST_BIN (pipeline), GST_ELEMENT (composition), fakesink,
       NULL);
   gst_element_link (GST_ELEMENT (composition), fakesink);
@@ -309,6 +311,7 @@ GST_START_TEST (test_dispose_on_commit)
   composition = gst_element_factory_make ("nlecomposition", "composition");
   pipeline = GST_ELEMENT (gst_pipeline_new (NULL));
   fakesink = gst_element_factory_make ("fakevideosink", NULL);
+  g_object_set (fakesink, "sync", FALSE, NULL);
 
   nlesource = gst_element_factory_make ("nlesource", "nlesource1");
   audiotestsrc = gst_element_factory_make ("audiotestsrc", "audiotestsrc1");
@@ -353,6 +356,7 @@ GST_START_TEST (test_simple_audiomixer)
   composition = gst_element_factory_make ("nlecomposition", "composition");
   gst_element_set_state (composition, GST_STATE_READY);
   fakesink = gst_element_factory_make ("fakeaudiosink", NULL);
+  g_object_set (fakesink, "sync", FALSE, NULL);
 
   /* nle_audiomixer */
   nle_audiomixer = gst_element_factory_make ("nleoperation", "nle_audiomixer");
@@ -483,6 +487,7 @@ GST_START_TEST (test_seek_on_nested)
 
   gst_element_set_state (comp, GST_STATE_READY);
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
+  g_object_set (sink, "sync", FALSE, NULL);
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
   gst_element_link (comp, sink);
@@ -578,6 +583,7 @@ GST_START_TEST (test_error_in_nested_timeline)
 
   gst_element_set_state (comp, GST_STATE_READY);
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
+  g_object_set (sink, "sync", FALSE, NULL);
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
   gst_element_link (comp, sink);
@@ -664,6 +670,7 @@ GST_START_TEST (test_nest_deep)
 
   gst_element_set_state (comp, GST_STATE_READY);
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
+  g_object_set (sink, "sync", FALSE, NULL);
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
   gst_element_link (comp, sink);
diff --git a/subprojects/gst-editing-services/tests/check/nle/nleoperation.c b/subprojects/gst-editing-services/tests/check/nle/nleoperation.c
index 2e8be8b0f8..1c5686f211 100644
--- a/subprojects/gst-editing-services/tests/check/nle/nleoperation.c
+++ b/subprojects/gst-editing-services/tests/check/nle/nleoperation.c
@@ -14,6 +14,7 @@ fill_pipeline_and_check (GstElement * comp, GList * segments)
   pipeline = gst_pipeline_new ("test_pipeline");
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
   fail_if (sink == NULL);
+  g_object_set (sink, "sync", FALSE, NULL);
 
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
diff --git a/subprojects/gst-editing-services/tests/check/nle/nlesource.c b/subprojects/gst-editing-services/tests/check/nle/nlesource.c
index 72aee071ce..3782b7cbc4 100644
--- a/subprojects/gst-editing-services/tests/check/nle/nlesource.c
+++ b/subprojects/gst-editing-services/tests/check/nle/nlesource.c
@@ -26,6 +26,7 @@ GST_START_TEST (test_simple_videotestsrc)
 
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
   fail_if (sink == NULL);
+  g_object_set (sink, "sync", FALSE, NULL);
 
   gst_bin_add_many (GST_BIN (pipeline), nlesource, sink, NULL);
 
@@ -126,6 +127,7 @@ GST_START_TEST (test_videotestsrc_in_bin)
 
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
   fail_if (sink == NULL);
+  g_object_set (sink, "sync", FALSE, NULL);
 
   gst_bin_add_many (GST_BIN (pipeline), nlesource, sink, NULL);
 
diff --git a/subprojects/gst-editing-services/tests/check/nle/seek.c b/subprojects/gst-editing-services/tests/check/nle/seek.c
index 8bd530c145..84c460c853 100644
--- a/subprojects/gst-editing-services/tests/check/nle/seek.c
+++ b/subprojects/gst-editing-services/tests/check/nle/seek.c
@@ -37,6 +37,7 @@ fill_pipeline_and_check (GstElement * comp, GList * segments, GList * seeks)
   pipeline = gst_pipeline_new ("test_pipeline");
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
   fail_if (sink == NULL);
+  g_object_set (sink, "sync", FALSE, NULL);
 
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
diff --git a/subprojects/gst-editing-services/tests/check/nle/simple.c b/subprojects/gst-editing-services/tests/check/nle/simple.c
index e6cbfe786d..d83ba69248 100644
--- a/subprojects/gst-editing-services/tests/check/nle/simple.c
+++ b/subprojects/gst-editing-services/tests/check/nle/simple.c
@@ -41,6 +41,7 @@ test_simplest_full (void)
 
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
   fail_if (sink == NULL);
+  g_object_set (sink, "sync", FALSE, NULL);
 
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
@@ -258,6 +259,7 @@ test_one_after_other_full (void)
 
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
   fail_if (sink == NULL);
+  g_object_set (sink, "sync", FALSE, NULL);
 
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
@@ -461,6 +463,7 @@ test_one_under_another_full (void)
 
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
   fail_if (sink == NULL);
+  g_object_set (sink, "sync", FALSE, NULL);
 
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
@@ -615,6 +618,7 @@ test_one_bin_after_other_full (void)
 
   sink = gst_element_factory_make_or_warn ("fakevideosink", "sink");
   fail_if (sink == NULL);
+  g_object_set (sink, "sync", FALSE, NULL);
 
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
diff --git a/subprojects/gst-editing-services/tests/check/nle/tempochange.c b/subprojects/gst-editing-services/tests/check/nle/tempochange.c
index e3d8208cc4..0454f5cc26 100644
--- a/subprojects/gst-editing-services/tests/check/nle/tempochange.c
+++ b/subprojects/gst-editing-services/tests/check/nle/tempochange.c
@@ -284,6 +284,7 @@ _setup_test (GstElement * pipeline, gdouble rate)
 
   /* sink */
   sink = gst_element_factory_make_or_warn ("fakeaudiosink", "sink");
+  g_object_set (sink, "sync", FALSE, NULL);
   gst_bin_add_many (GST_BIN (pipeline), comp, sink, NULL);
 
   gst_element_link (comp, sink);