scummvm/scummvm — pull request #180 by tsoliman (2012-02-09 20:45:02+00:00)
Title: MT32: Add --disable-mt32emu-accurate-wg to configure

Using this significantly improves performance and (supposedly) slightly reduces quality.
I couldn't personally tell the difference in quality but the difference in performance on my laptop was significant (dual core 1.8 Ghz CPU couldn't keep up; ALSA buffer underruns)
The default behavior is unchanged.