This version is stable and basically functional, though the camera backend is not as efficient as it could be (resulting in 'queue filling' and 'frame lag' when connecting to pushing the computer beyond it's capacity).
Most computers should be able to handle 3 cameras at 1280x720 resolution, but if you see the 'Queue Size' number start creeping up (and lag developing between your movements and the camera view), either disconnect some cameras or decrease the resolution