I’ve been having crashes in Titans on a 2015 15” rMBP (discrete GPU)— as far as I can tell, they only happen when playing with my display set to 1x— that is, 2880x1800. I’ve attached the OS X crashlogs and the PA crashlog for the most recent one.
I apologize for the delayed response. Are you still experiencing these crashes? If so, can you clear out your log directory and run the game again and submit a fresh game log?