Lilly Looking Through can perform poorly if Flash Hardware Acceleration is disabled.
To enable hardware acceleration:
1) Go to the Flash Player Help website.
2) Scroll down to section 5. Verify if Flash Player is installed. Right click the image and select Settings.
3) A window should appear over the image. Locate the Display tab, and make sure the checkbox next to Enable Hardware Acceleration is checked.
If this box is already checked, or if checking it does not seem to help - try going through the same steps in another browser which may be installed on your computer, such as Internet Explorer.