What is more effective (Number Lists)

So is it better to use Copy before Modifying, or to just use 2 number lists?

On a small scale it doesn’t matter, but what if for some reason I needed to use 100 of these? I’m wondering because I need peak performance, and in the description, it says this.

Be aware that making many list copies can have a negative impact on game performance

I don’t care if it only saves me 5 frames, I want to know.


I am assuming “Copy before Modifying” is more effective (Otherwise it wouldn’t exist), but I just want to make 100% sure before I do anything drastic

So I did a bit of testing and it appears that on a large scale using “Copy before Modifying” is much more effective