so yeah, how can i make aperture 3 not painfully slow? with the caveat that i don’t want to spend money on hardware upgrades etc (and afaik the CPU/GPU in my 1st gen 24" iMac isn't upgradeable anyway) ...

The aperture is made up of mechanical blades that increases or decreases in size depending on the aperture you select. In humans, the iris is a thin, circular structure in the eye, responsible for ...