diff --git a/app/assets/stylesheets/common/base/header.scss b/app/assets/stylesheets/common/base/header.scss
index e5392f2cd0..459d9385f2 100644
--- a/app/assets/stylesheets/common/base/header.scss
+++ b/app/assets/stylesheets/common/base/header.scss
@@ -8,6 +8,7 @@
 
     .docked & {
       position: fixed;
+      backface-visibility: hidden;  /** do magic for scrolling performance **/
     }
 
     .contents {