I've experienced this twice now. Suddenly the image is frozen, but I'm still interacting with the world, and if I hit ESC I enter the menu and so forth. I've the latest nvidia driver and I never ever experience problems in any other games. I have played I don't know how many games in the holidays, and it's only Camageddon Max Damage that is having problems. The game does not crash at any point though, the image just freezes.
A second problem I've experienced, is falling through a map. Both me and the opponents did so, on the Isle of Plight map, and it happened on quite a large area.
Windows 10 fully updated
nvidia 680 GTX (playing in 1080p)