WPF Storyboard flicker issue

Wit开发者_JAVA技巧h the code below, the control flickers whenever the image is changed for MouseOver/MousePressed? I am using Storyboard and Double animation.The image display for the button borderis very smooth with WPF Triggers but not with Storyboard. Can anyone help me to fix this issue?

It could be a thread priority issue, try showing the window with ShowDialog() (modular window) instead of Show() and see if it still happens.