--- a/options.h
+++ b/options.h
@@ -726,7 +726,7 @@ public:
         return OpenGLCompositing;
     }
     static bool defaultUseCompositing() {
-        return true;
+        return false;
     }
     static bool defaultCompositingInitialized() {
         return false;
--- a/kcmkwin/kwincompositing/compositing.cpp
+++ b/kcmkwin/kwincompositing/compositing.cpp
@@ -75,7 +75,7 @@ void Compositing::reset()
     setWindowThumbnail(kwinConfig.readEntry("HiddenPreviews", 5) - 4);
     setGlScaleFilter(kwinConfig.readEntry("GLTextureFilter", 2));
     setXrScaleFilter(kwinConfig.readEntry("XRenderSmoothScale", false));
-    setCompositingEnabled(kwinConfig.readEntry("Enabled", true));
+    setCompositingEnabled(kwinConfig.readEntry("Enabled", false));
 
     auto swapStrategy = [&kwinConfig]() {
         const QString glSwapStrategyValue = kwinConfig.readEntry("GLPreferBufferSwap", "a");
--- a/kwin.kcfg
+++ b/kwin.kcfg
@@ -233,7 +233,7 @@
             <default>OpenGL</default>
         </entry>
         <entry name="Enabled" type="Bool">
-            <default>true</default>
+            <default>false</default>
         </entry>
         <entry name="GLTextureFilter" type="Int">
             <default>2</default>