Hello, Fishlicka.
For a good while, this game ran consistently like butter on my toaster, since there's relatively little content. In most cases, that is still the case.
That being said, with more content being added each build, my computer experiences a tiny - so far, mind you, tiny - hiccup every once in a blue-moon, particularly when things get busy.
I might as well make the request: Please consider adding somewhere low on the pipeline list, implementation of an option for super, *super* low graphics that will make the game even more runnable for mid-level to low computers.