If the app freezes when selecting a preset from the pull-down menu due to the preset name being read out loud, click the settings icon in the upper right corner of the window and turn off Enable Accessibility to improve the situation.
I just spent a lovely two hours playing around with the Emulator II V. Added in my own samples. Played my finished piece for the wife. She said it scared her. I told her I found it relaxing.
Ok, now you HAVE to share that piece with us. I want to hear it!