Runs Poorly on 2011 MAc Mini HD6630M i5 2.5

I have many macs, and this game runs great on my 2008 MacBook. However, it has about 6 fps on my 2011 Mac Mini. I reinstalled Lion, and it is playable on that. Even using a SSD it is unplayable in ML. I have no idea what is going on. I used the HDD, and then the SSD for both Lion and ML, same results.

10.8.3 - not playable
10.7.5 - playable

Sheriff599 about Sky Gamblers - Storm Raiders, v1.0.3