As far as I can tell, it's fairly optimized, but just be careful scanning too much I guess. click to scan, scans dots at mouse. WASD and Arrow keys to move. There are SOME references in the map. if you want easy mode for no reason and want to destroy the purpose of the project, press J, press again to play properly.
Some Credit to @_Cr1spy for the code, I had a lot of iterations before looking at their version of this project for some help.