From what I know (I’m mainly a designer, so I don’t know all of the ins and outs under the hood): No, they don’t get updated on a tick basis. It’s all event based. Basically, when an object with collision changes position, it’s collision is then checked against all other objects that have active collision. So if you’ve got 200 triggers, it’s going to do 200 checks. AFAIK, a disabled trigger basically cost nothing.