Though I've been playing video games since they first came out and have been using a computer since the Mac, I never had any hand or wrist problems till this game. I now wear a wrist brace on my right hand from the never ending phaser firing. I think phasers should be automatic and we can do torpedoes manually.
There is an autofire, go into options and go to the bottom of the Controls tab, change it to one of the options. After that right click any weapons you wish to autofire (they should now have a green boarder).
Or at least a more responsive UI so that I don't end up smashing buttons. Sometimes it seems as if the cooldown is swallowing the firing command even though the interface has shown the attack as ready. You often end up wasting potentially valuable seconds.
Ok make the changes listed above in the Options window, then right click the weapon on the weapon tray to set it to autofire. It will be outlined in green when it is set properly. For ground, right click the weapon attack on the hotbar, and it will be outlined in green when set properly.