Anti-Aliasing Causes Freeze on OS X

[andrewaltogether]

KSP version 1.1

OS X 10.11.4

iMac 27" Late 2012

3.4GHz Core i7

32GB DDR3-1600 RAM

GeForce GTX 680MX 2GB

 

If I have Anti-Aliasing enabled (2X, 4X, or 8X), the game freezes when I go to start a new game. To be clear, the game loads, I see the menu with no graphical issues, and when it starts to load the Space Center, the screen stays black and I get the pinwheel. If I disable AA, it works fine. Also, the edge highlighting option doesn't work: on or off in the menu, edge highlighting never appears.