I was experiencing some weirdness when replicating instances of my little sequencer Class. After consulting with SSC it turns out I was doing Parameter Transformation which inadvertently duplicated all the SoundToGlobalControllers causing confusion and problems. I have completely redesigned the core, and feel it is much improved in terms of efficiency and timing.
Please use the new version in your sound designs, you will have to substitute it by hand, copying and pasting parameter fields carefully from the old Class to the new one, if you have used the previous version in your work ( sorry! )
Grab V2 here for free http://kyma.symbolicsound.com/library/neverengine-labs-stepsequencer/