A few settings are available that affect the CPU usage of Stereo Tool.
The first step to limit the CPU usage is to lower the screen refresh speed.
Note that this only affects the CPU usage if the window is visible, not if
it is iconified.
It is also possible to change the sound quality. Since version 2.03,
very low frequency sounds are handled separately. Due to this the difference
between low, medium and high quality is now very small, and probably inaudiable
for most people.
The difference between low,
medium and high quality is small, the difference in CPU usage are large.
Differences are mostly audiable with very simple one-tone sounds, eg. classical
music will get the biggest gain in sound quality when the quality is set to
high. For "wilder" types of music and other recordings, the difference is
Low quality still sounds better than high quality in Stereo Tool 2.02, and low quality in Stereo Tool 2.02 still sounds better than Stereo Tool 1.x versions.
Medium quality sounds a lot better, and takes only slightly more CPU power.
High quality sounds only slightly better than medium, and takes a lot more CPU power.