I am running x-plane 11 pb7 demo on rMBP mid 2012.
The sim loads but when I start a flight (any flight), simulation is working (confirmed by outputting data to the screen), but it does not receive any commands. the mouse disappears and no matter what keys I type the sim doesn't respond.
after some time (sometimes over 5 minutes or more) of waiting, the simulation becomes responsive, and I even get a decent frame rate for the flight.
am concerned that if I buy the full version this problem will persist.