getUrl() and getUrl('conversion') takes time in map loop

[mikevosje]

Hi!

I have an activity model where I eager load the images attached with this media library. With 30 items, this takes around 350ms. When mapping over this query, I create a new property where I map over the eager loaded images and get the url. For the api response, i only need the url's.

$activity->mediaobject = $activity->images->map(function (Media $media) {
                               return (['thumb'  => $media->getUrl('thumb'),
                                        'medium' => $media->getUrl('medium'),
                                        'full'   => $media->getUrl()
                               ]);
                           });

But after executing this, the time rises to 1 or even 1.5 seconds. Normally, there are 1-3 images per activity.
I also tried a custom model with attributes, but that makes no difference.
The data will be in a api JSON response to a javascript/app frontend.

Did I do something wrong or is there another way?
Thanks for the answers!

[mikevosje]

After a little research and testing, I found out that Storage::url('') from a S3 bucket takes (much) time.
After creating the simplified url generation myself, not using Storage::url() and use attributes on a custom model, 30 activities were loaded with all the images and there 3 url's in 360-400ms. When using Storage::url(), the time rises to 800ms.

Can this be due to a connection with the S3 bucket?