Hello @Vibstronium,
In fact, in this type of setup everything depends on the calibration software (here FlyElise). Of course, it also depends on how it is calibrated (which is not a simple mission next to the manufacture of the structure!)
I found the idea really interesting to use projectors rather than screens simply because it seemed to me more fascinating and more immersive. 
You will soon be able to see the final result. 
Have a good day !