smoke simulator busting my computer

heey… ok so, i got one domain cube, and a plane flow… nothing advanced has been set up, but im being knocked down to under 3 framerate. is this normal?

Depends on the complexity of the scene, your smoke settings, your computer hardware and any other background applications you are running. We know nothing about these in your case.

just a domain and flow… nothing else. not much has been set up, and hardware is storng enough to deal with smoke simulating since i have used it before.