Summary: However, the game does have a few problems. The graphical CoasterCam glitches are the most serious, and need fixing, but there are other issues too. I'm a little concerned about performance. I have a high-end machine: a dual 2.5GHz PowerMac G5 (mid-2004 vintage) to which I have added an ATI Radeon X800. I was therefore surprised to notice performance issues, and can only imagine what kind of lags there would be on lower-end G4-based systems.