diff --git a/kcmkwin/kwincompositing/compositing.ui b/kcmkwin/kwincompositing/compositing.ui
--- a/kcmkwin/kwincompositing/compositing.ui
+++ b/kcmkwin/kwincompositing/compositing.ui
@@ -90,7 +90,7 @@
      <item>
       <widget class="QSlider" name="animationSpeed">
        <property name="maximum">
-        <number>6</number>
+        <number>10</number>
        </property>
        <property name="orientation">
         <enum>Qt::Horizontal</enum>
@@ -117,7 +117,7 @@
          <property name="orientation">
           <enum>Qt::Horizontal</enum>
          </property>
-         <property name="sizeHint" stdset="0">
+         <property name="sizeHint">
           <size>
            <width>40</width>
            <height>20</height>
diff --git a/kwin.kcfg b/kwin.kcfg
--- a/kwin.kcfg
+++ b/kwin.kcfg
@@ -254,7 +254,7 @@
         <entry name="AnimationSpeed" type="Int">
             <default>3</default>
             <min>0</min>
-            <max>6</max>
+            <max>10</max>
         </entry>
         <entry name="GLPlatformInterface" type="String">
             <default>glx</default>
diff --git a/options.h b/options.h
--- a/options.h
+++ b/options.h
@@ -926,7 +926,7 @@
     bool borderless_maximized_windows;
     bool show_geometry_tip;
     bool condensed_title;
-    int animationSpeed; // 0 - instant, 5 - very slow
+    int animationSpeed; // 0 - instant, 3 - most balanced, 10 - very slow
 
     QHash<Qt::KeyboardModifier, QStringList> m_modifierOnlyShortcuts;
 
diff --git a/options.cpp b/options.cpp
--- a/options.cpp
+++ b/options.cpp
@@ -992,7 +992,7 @@
     setHiddenPreviews(previews);
 
     // TOOD: add setter
-    animationSpeed = qBound(0, config.readEntry("AnimationSpeed", Options::defaultAnimationSpeed()), 6);
+    animationSpeed = qBound(0, config.readEntry("AnimationSpeed", Options::defaultAnimationSpeed()), 10);
 
     auto interfaceToKey = [](OpenGLPlatformInterface interface) {
         switch (interface) {
@@ -1124,7 +1124,7 @@
 
 double Options::animationTimeFactor() const
 {
-    const double factors[] = { 0, 0.2, 0.5, 1, 2, 4, 20 };
+    const double factors[] = { 0, 0.2, 0.5, 1, 1.25, 1.5, 1.75, 2, 2.5, 3, 4 };
     return factors[ animationSpeed ];
 }