Bug Proteansky Emitter (Mass Effect 3)

Hello. Tell me how to fix bug with Proteansky Emitter, namely: When Javik Proteansky shoots out of the Emitter is not visible beam. I mean when hitting an enemy the hit is seen, and the beam no. Moreover, when the Emitter shoots Shepard - everything is visible. When Avik - no. Who faced? Please tell me how to fix it.