C2 after awhile is sucking all my memory from my PC and is resulting in crash, I need to ctrl+alt+del and stop the program. This happens when I'm with a game with heavy content loaded. Note that this isn't an instant thing, it takes time but you can see the memory usage increasing slowly. My PC have not much memory, 4gb only but still.. that's a problem..
The solution, at least for me is after some time close completely the program(not only the project) and reopen it.