Random Crash On Kill?

It's happened to me twice now. Basically everything seems to be normal, but without warning, the game freezes up right as I'm getting a kill. The strangest part is the way it crashes. Everything freezes as if the game is paused, but I can still look around. The lighting effects still dynamically cast around the environment (i.e. the muzzle flash from my gun will light up the surrounding area wherever I point it, laser will still move with the gun and shine across whatever it's pointed at). It's all still being rendered and the game is still running for a few minutes. Then the client will finally close without an error. Didn't manage to screen record it. A CrashDump and GameStall .mdmp file both got generated at the same time. Attached in a .zip.