So, I've had three separate games freeze on me:
Dishonored-Froze after 5gb install, then froze again upon reload at the "this is what a save icon looks like" screen.
Max Payne 3-Froze on Chapter 4
Skyrim-Froze on me as well, but it's Skyrim, so it's to be expected.
I had 30gb worth of content downloading while playing these games, not sure if that matters or not.