diff --git a/dlls/ddraw/tests/ddraw1.c b/dlls/ddraw/tests/ddraw1.c
index b513121fbbc..80c96fccc4c 100644
--- a/dlls/ddraw/tests/ddraw1.c
+++ b/dlls/ddraw/tests/ddraw1.c
@@ -12908,9 +12908,19 @@ static void test_clipper_refcount(void)
     IDirectDrawClipper_Release(clipper);
     IDirectDrawClipper_Release(clipper);
 
-    hr = IDirectDrawSurface_GetClipper(surface, &clipper2);
-    ok(SUCCEEDED(hr), "Failed to get clipper, hr %#x.\n", hr);
-    ok(clipper == clipper2, "Got clipper %p, expected %p.\n", clipper2, clipper);
+    if (!ddraw_is_nvidia(ddraw))
+    {
+        /* Disabled because it causes heap corruption (HeapValidate fails and random
+         * hangs in a later HeapFree) on Windows on one of my Machines: MacbookPro 10,1
+         * running Windows 10 18363.535 and Nvidia driver 425.31. Driver version 441.66
+         * is affected too.
+         *
+         * The same Windows and driver versions run the test without heap corruption on
+         * a Geforce 1060 GTX card. I have not seen the problem on AMD GPUs either. */
+        hr = IDirectDrawSurface_GetClipper(surface, &clipper2);
+        ok(SUCCEEDED(hr), "Failed to get clipper, hr %#x.\n", hr);
+        ok(clipper == clipper2, "Got clipper %p, expected %p.\n", clipper2, clipper);
+    }
 
     /* Show that invoking the Release method does not crash, but don't get the
      * vtable through the clipper pointer because it is no longer pointing to
diff --git a/dlls/ddraw/tests/ddraw2.c b/dlls/ddraw/tests/ddraw2.c
index a2a27d86f01..390184e80dc 100644
--- a/dlls/ddraw/tests/ddraw2.c
+++ b/dlls/ddraw/tests/ddraw2.c
@@ -13737,9 +13737,19 @@ static void test_clipper_refcount(void)
     IDirectDrawClipper_Release(clipper);
     IDirectDrawClipper_Release(clipper);
 
-    hr = IDirectDrawSurface_GetClipper(surface, &clipper2);
-    ok(SUCCEEDED(hr), "Failed to get clipper, hr %#x.\n", hr);
-    ok(clipper == clipper2, "Got clipper %p, expected %p.\n", clipper2, clipper);
+    if (!ddraw_is_nvidia(ddraw))
+    {
+        /* Disabled because it causes heap corruption (HeapValidate fails and random
+         * hangs in a later HeapFree) on Windows on one of my Machines: MacbookPro 10,1
+         * running Windows 10 18363.535 and Nvidia driver 425.31. Driver version 441.66
+         * is affected too.
+         *
+         * The same Windows and driver versions run the test without heap corruption on
+         * a Geforce 1060 GTX card. I have not seen the problem on AMD GPUs either. */
+        hr = IDirectDrawSurface_GetClipper(surface, &clipper2);
+        ok(SUCCEEDED(hr), "Failed to get clipper, hr %#x.\n", hr);
+        ok(clipper == clipper2, "Got clipper %p, expected %p.\n", clipper2, clipper);
+    }
 
     /* Show that invoking the Release method does not crash, but don't get the
      * vtable through the clipper pointer because it is no longer pointing to
diff --git a/dlls/ddraw/tests/ddraw4.c b/dlls/ddraw/tests/ddraw4.c
index 77cf6f45114..1a16e2d571e 100644
--- a/dlls/ddraw/tests/ddraw4.c
+++ b/dlls/ddraw/tests/ddraw4.c
@@ -16388,9 +16388,19 @@ static void test_clipper_refcount(void)
     IDirectDrawClipper_Release(clipper);
     IDirectDrawClipper_Release(clipper);
 
-    hr = IDirectDrawSurface4_GetClipper(surface, &clipper2);
-    ok(SUCCEEDED(hr), "Failed to get clipper, hr %#x.\n", hr);
-    ok(clipper == clipper2, "Got clipper %p, expected %p.\n", clipper2, clipper);
+    if (!ddraw_is_nvidia(ddraw))
+    {
+        /* Disabled because it causes heap corruption (HeapValidate fails and random
+         * hangs in a later HeapFree) on Windows on one of my Machines: MacbookPro 10,1
+         * running Windows 10 18363.535 and Nvidia driver 425.31. Driver version 441.66
+         * is affected too.
+         *
+         * The same Windows and driver versions run the test without heap corruption on
+         * a Geforce 1060 GTX card. I have not seen the problem on AMD GPUs either. */
+        hr = IDirectDrawSurface4_GetClipper(surface, &clipper2);
+        ok(SUCCEEDED(hr), "Failed to get clipper, hr %#x.\n", hr);
+        ok(clipper == clipper2, "Got clipper %p, expected %p.\n", clipper2, clipper);
+    }
 
     /* Show that invoking the Release method does not crash, but don't get the
      * vtable through the clipper pointer because it is no longer pointing to
diff --git a/dlls/ddraw/tests/ddraw7.c b/dlls/ddraw/tests/ddraw7.c
index f4a709711b0..20a1bc5f3af 100644
--- a/dlls/ddraw/tests/ddraw7.c
+++ b/dlls/ddraw/tests/ddraw7.c
@@ -16290,9 +16290,19 @@ static void test_clipper_refcount(void)
     IDirectDrawClipper_Release(clipper);
     IDirectDrawClipper_Release(clipper);
 
-    hr = IDirectDrawSurface7_GetClipper(surface, &clipper2);
-    ok(SUCCEEDED(hr), "Failed to get clipper, hr %#x.\n", hr);
-    ok(clipper == clipper2, "Got clipper %p, expected %p.\n", clipper2, clipper);
+    if (!ddraw_is_nvidia(ddraw))
+    {
+        /* Disabled because it causes heap corruption (HeapValidate fails and random
+         * hangs in a later HeapFree) on Windows on one of my Machines: MacbookPro 10,1
+         * running Windows 10 18363.535 and Nvidia driver 425.31. Driver version 441.66
+         * is affected too.
+         *
+         * The same Windows and driver versions run the test without heap corruption on
+         * a Geforce 1060 GTX card. I have not seen the problem on AMD GPUs either. */
+        hr = IDirectDrawSurface7_GetClipper(surface, &clipper2);
+        ok(SUCCEEDED(hr), "Failed to get clipper, hr %#x.\n", hr);
+        ok(clipper == clipper2, "Got clipper %p, expected %p.\n", clipper2, clipper);
+    }
 
     /* Show that invoking the Release method does not crash, but don't get the
      * vtable through the clipper pointer because it is no longer pointing to