I dunno if anything on this has been said, as I dont have much time atm.
Constant beam weapons cannot work, in theory.
To get a constant beam weapon, you need extremely high refire. To obtain this, you must set the value to -1. Cant fire at negative one shots per second, so the game compinates by making it Infinite.
And, if you have infinite shots being fired, you techinchally can be dealing infinite damage. Insta kill.
Finally, energy consumption is on a shot basis, so your powercore would be drain instantly seeing as you attempted to use infinite energy.
This is mostly in theory, but I am 95% sure this is accurate.