Why Flash 8 Professional Runs slow on Windows Vista?

When you double click the movie clip or opens it runs slow. Why?
Ans: Well Yeh!! It’s true that Flash 8 runs slow on Windows Vista. I did a research on it and finally found that the Desktop Window Manager (dwm.exe) takes lots of memory and forces Flash 8 to run slow. You can see it going the task manager. If you end the process of dwm.exe your flash will starts running faster dramatically.
I have one other solution also
Take the following steps:

• Go to Flash.exe properties.
• Go to compatibility tab
• Set it for Windows XP service pack 2.
• Now open the flash.

This will decrease the memory input of Dwm.exe.