just for the heck of it, you might try premiere 2014.1 instead of 2014.2
Now granted I am on 2009 mac towers but 2014.2 was very unstable for
us. multi-cam editing was impossible to do and we experienced other system crashes while editing
simple TV commercial length sequences. Getting the spinning beach ball often, for no reason.
I don’t know why, as others seem to be fine with it, but I can
say rolling back to 2014.1 fixed the issues I had.