I’ve downloaded the experimental build of Cataclysm: DDA more specifically 0.C 11219-g8f54ff5. And I use the debug menu to teleport around because I like gathering items and crafting things instead of walking all the way to the city and even further distances by car. But occasionally after teleporting the game freezes up and a message pops up saying Cataclysm: DDA Has stopped responding and then closes. Is this a known bug or? Any help would be appreciated 
How long do you usually wait when it freezes?
Sometimes the game generates huge wreckage (dozens of vehicles merged into one). This takes some time and the game may appear to be frozen. Wait a few minutes and if the game unfreezes, look around for a big vehicle wreckage. It probably only happens in towns.