Slow Powerbook Graphics?

[digitdean]

I've been noticing that my 15" Powerbook's graphics have gotten really sluggish after installing 10.4. My xBench OpenGL results show about 30 fps on the graphics test, as opposed to more than 60 when I first took the test a year and a half ago.
Has anyone else been having these graphics problems, and does anyone know how to fix them?

 

[Eniregnat]

What's running in the background? Are your running identical power savings settings? Are the circumstances exactly the same? Just questions, as I thought my Mac was faster at rendering under 10.4.x than it was 10.3.

This [link isn't to distract you. It just highlights what the human eye needs to see motion with out blur or flicker. It's all rather interesting.