understanding and debugging the core update process
Installation and Configuration
No - there's no strain. I downloaded that file from my system here and get 30mb/s. I'm pretty certain this is the root of your issue - you've got some downstream throttling going on, or your hosting provider is not giving you a good connection to the wider net - i.e. they are are only using a single backbone provider such as Cogent, which is a "cheap" typically oversold provider that many low cost hosting provides go with.
