Please pass this along to the dev team: How are they going to QA the lag when no one is using the feature at all? On Siren I have never, ever seen the yell function used ever. Ok, I admit that was a condescending and rhetorical question. The truth is I'm excited about this feature but lag is increased because it's disabled.
You see, if yell were enabled, lag would be alleviated in Port Jeuno since players would go to other areas of the city.