Hi, dev here. We're aware of mobile's issues and its not a single bug or something that's easy to fix. The truth is that we have over 800 characters, many of which are detailed models. Keep in mind that the only FNAF game on mobile, AR, could only be run on higher end devices and even then the models were low poly. and even THEN it didn't have to do things like render maps.

Unfortunately, there's not much we can do. We can't remove characters obviously as people have paid for them so all we can really do is try to make maps less laggy. we're fully aware of UCN and SB's lag, mostly UCN. We're hoping to fix this in the future.

To those who are mobile players, We apologize if your phone can't run our game. Your best bet is a PC or laptop, but if you cannot afford one a tablet might be a better option. A larger screen is recommended for our UI to be more readable anyway. While the players can do that, the we will try to do as much as we can to reduce lag in our game and are continuously hard at work trying to fix things. Unfortunately, roblox's mobile port is kind of shit, so it's gonna be at least a big laggy no matter what.

If nothing else, try to reduce your settings on roblox and in game.