EQPlaynice is a utility that optimizes performance when playing EverQuest, particularly useful when playing multiple sessions simultaneously. EQPlayNice allows two different methods of basic limiting -- CPU and Framerate. CPU limiting aims to keep CPU usage at a constant rate by giving up the same amount of CPU time per frame.
Framerate limiting aims to give up the minimum amount of CPU time per frame to meet a framerate goal. EQPlayNice allows selection between the two methods for foreground as well as background, and also allows a goal setting for each.