Help in GameMaker

I want to make a horror game that's more triple AAA style based off a serial killer. I was thinking Jeffery Dahmer because the Netflix series, but needed opinions first, and maybe some help.

I'm going to use UE5 and could use help.

So... I'm doing a closed test on my mobile game and I need testers , If you where interested in test my game, leave a comment in this post, thanks

Does anyone knows how to make fnaf AI of the characters move?

Does anyone know how to make the office scrolling nice and smooth in Gamemaker studio?

Mello! me have a question: is it worth using an if statement in a step event if it will only run one line of code? This is something I've always been unsure about