Listen I have the same exact problem as the OP. However the key that causes my game to completely crash CTD is DELETE!!! Please fix it. I too have remapped but sometimes out of habit I will hit that dam DELETE key and BOOM crash goodbye rad score and fun game.
win 8.1
8gigs ram
amd 5350
amd r9 280x
everything is updated and I'm running the 14.4 drivers.
crash has nothing to do with mantle or video settings but everything to do with some legacy coding in the game.
