Hi - can you please explain your computer specs, any audio interface specs, and list the steps that you are going through to trigger the crashes?
In the detail you will hopefully provide, I would also be interested in precisely which plugins are involved.
Thanks, I use Step Sequencer all the time, and while it has some quirks, it seems to be quite stable for me. This makes me think your issues are some kind of combination of things that could be adjusted and fixed up for you.
Bob Bone