The latest 1.3.1 runs slower than 1.2.x. Even native Amiga games like Secret of Monkey Island are considerably slower. Plus ScummVM hangs/freezes very often now.
Also, I didn't manage to enable speech & sfx. Music runs fine, though.
And yes, I found the boing ball splash after enabling aspect ratio correction.
Actually I like the 320x240 resolution, because it uses the whole screen, but I really don't like scaling during the game.