By the sound being "destroyed" I mean the PC Speaker sounds. The games are designed, it seems, to use chip speed to control the speaker sounds (instead of the clock or some other stable source.) So on faster running machines the sounds are spead up until they are little more than brief buzzes. So, if I set the cycles to where the game plays normally the PC Speaker sounds are only buzzes. Yet, if I set it so that the PC Speaker sounds are the way they are supposed to be, then the games play extremely slow with the graphics updates installed.
Note: I've tried all the different core= values available, I've tried different Output= settings, I've even tried disabling all sound and extras (just to check,) and it still runs extremely slow. I haven't tried the CVS, I usually prefer to stick with oficial releases, but the problem has been present for since 0.58 or so.