[danengel]

Hi,

on my dual G4 1.25 GHz I noticed a strange behaviour:

When I turn on the visual effects iTunes with the window maximized on my 1280x1024 screen, normal framerate is about 20 (why so low, anyway?), CPU usage is 70/70 %.

As soon as the Dock becomes visible, the framerate drops to 15.

When I start moving items around in the Dock, framerate goes below 10, but the CPU usage does not exceed 75/75!

If CPU power is left, why isn't it used to increase the framerate? Not that my life would depend on it, I'm just curious.

-- Daniel

[ckohler]

It probably has something to do with your available graphics card bandwidth in conjunction with Quartz. That's just a guess, though.

[coolmacdude]

Originally posted by danengel:

When I turn on the visual effects iTunes with the window maximized on my 1280x1024 screen, normal framerate is about 20 (why so low, anyway?), CPU usage is 70/70 %.

Are you viewing it in full screen mode or in the iTunes window sized really big? If the former, try full screen mode (Command-F) it is much faster.

[danengel]

With the "really big" window. In fullscreen, the resolution is reduced, which doesn't look that good.

I don't understand that the iTunes visuals eat up so much CPU, whereas my shoot-em-up games occupy my Dualie only about 50 %, and they have much more complex graphics.

[Art Vandelay]

You'll also want to check your Visuals Options. Make sure it isn't capped at 30fps and OpenGL is enabled.