Sound woes - timing is all off

troflip Hi,
I'm using Soundbox to convert midi files to resources that SCIStudio can use. I find that when playing the game, the timing of the music is all off... the notes sound jumbled. Even notes on the same track.

It sounds fine in Soundbox. I've tried midi files from several different sources, and all have the same problem.

I notice that sciv.exe uses 100% CPU when running (at any point in the game, not just when music is playing). I'm wondering if that is affecting the timing of the notes?
Should sciv.exe be using 100% CPU?