It has been already made + it's obvious it's going to be slower since dynamic array relies on natives and do some stuff internally. Kind of silly to compare them unless you would want to see how big difference could be, but even that, you don't get useful informations. Also, you will never have a plugin doing that much calls in one frame, which means that for most of cases, difference is trivial. You should use dynamic array when it makes sense to use them.