Ive just installed it now from Steam on my MBPr 2013 integrated graphics, 10.10.5, 8 Gb and it wont go past character creation into the game without crashing.
Graphics hardware encountered an error and was reset: 0x00000003, EXC_CRASH (SIGABRT) in the Unity thread.
A hotfix hasnt been coming shortly, should i get a refund?