I mean do we really have an observable performance advantage?
It depends ...
Sometimes you get better performance because you made it smaller avoiding features you won't use
Sometimes you get better performance because you include some special features
Sometimes you get a worst performance than the pkg because you don't know what you are doing
And other times, the source is so simple than you will obtain the same than pkg
I recomend you to use always the pkg because the porters knows much better the program and they try to optimize for every situation and then, use the port only if you miss a feature you need ... but it's just my personal opinion 👍