Title: Response Slow Matching Notes In Nimbus LAF
When using the Nimbus look-and-feel while you're either recording, or matching (playing) notes displayed from the MIDI Player, response is sluggish on a slow machine.
Cause Of Problem:
The way the Nimbus look-and-feel updates the musical staff graphics display on Linux, is much less efficient than the other available look-and-feel settings.
If you notice this problem, don't use the Nimbus look-and-feel (LAF). GTK+ is the native look-and-feel for Linux, and it avoids the efficiency problem. It also has a better display of slider-controls.
Fix Available (in version):