File Upload to S3 is super slow

**Node version**: v18.8.0
**Sails version** _(sails)_: .5.0
**ORM hook version** _(sails-hook-orm)_:
**Sockets hook version** _(sails-hook-sockets)_:
**Organics hook version** _(sails-hook-organics)_:
**Grunt hook version** _(sails-hook-grunt)_:
**Uploads hook version** _(sails-hook-uploads)_:
**DB adapter & version** _(e.g. sails-mysql@5.55.5)_: Mongo db
**Skipper adapter & version** _(e.g. skipper-s3@5.55.5)_:

The issue names no files, tests, or entry points. Start by reproducing the S3 upload with Node v18.8.0, Sails .5.0, MongoDB, and the reported uploads configuration, then gather timing and complete the missing adapter and hook version details. Done means the upload is measurably faster and the regression is covered by a reproducible check.

Written by the indexing model from the issue text.