Speed up Quake 3

In Windows XP, set the compatibility mode to Windows 98 / ME  and make sure it runs in 640x480 initially. Then in the game, set your screen size.

To do this:

1. Right click quake3.exe in winxp and goto properties.

2. Click Compatibility Tab.

3. Tick first box and select win 98 / ME compatibility mode.

4. Tick the box beside the 640x480 text.