Cycle precision offers almost cycle exact emulation of the VIC including its effects on the CPU. While it is the slowest type of video emulation, it is also the most precise (recommended for fast Macs).
High precision offers almost cycle exact emulation of the VIC, but ignores some details of timing effects of the VIC on the CPU, for improved performance.
The sprites for are rendered independently from the rest of the scanline.
This is a little slower, but handles more raster effects (recommended for slow Macs).
The entire scanline is rendered at once.
This is very fast, but fails on some games that have tricky raster effects.
