Hmm same story (no ticket). It was more like 2min between crashes after the main Jubilee patch in the guantlet area. After the second patch however I rejigged all my graphics settings and haven’t had a repeat so far. So not sure if it was the second patch or just setting graphics up again that helped. I run at 1440p with high textures/environment and medium shadows with AA off. At work atm so cant remember the rest of the settings, but generally high from memory a couple maybe medium. Don’t run anything at ultra.
specs
27" iMac
3.4Ghz core i7
16GB DDR3
AMD Radeon HD 6970M 2048 MB
Mac OS 10.8.4
edit: I note most if not all posts so far are AMD, with the majority being the 6970m card.