Optimise collision checking

i read that the best way to optimise collision checking is

by excluding/filtering objects or by doing a every .. seconds and putting the filtering events on top before the collision check

but collision checking is a trigger, so is always on top,

should i put the collision checks in a subevent?

im just confused, any tips, help?

I think what you read was referring to is the 'is overlapping' condition, which isn't a trigger, you can place it below other conditions.

but for the 'on collision' trigger, you can work around the way it forces itself to the top by just making it a sub event to a blank event.. i've done it a few times and i've not noticed any bugs.

Yes, you can put them in subevents to make sure it only does the collision check if the parent events are true.

okey, thanks guys