Have you applied software updates so that you have 10.4.11 and latest Quicktime 7?
Core Image is not supported on your card, as the profiler indicates.
If you go in to System Preferences, Display, set number of colors to Thousands and see if things run better, if the software updates doesn't help.
Core Image is not supported on your card, as the profiler indicates.
If you go in to System Preferences, Display, set number of colors to Thousands and see if things run better, if the software updates doesn't help.