The Arcalis Engine performance relays directly on your hardware configuration, specially over the graphics card. The more powerful and fine tuned is your Mac, The Engine will allow you doing more things.
We have tested our engine over many Mac models, and all the 2010 and newer perform good. Obviously the better CPU the better performance and more realtime features.
On the Macbooks we have found with graphic boards like the NVIDIA GeForce 9400M or older perform poorly and the following models with the NVIDIA GeForce 320 and better perform ok.