The current Assets Library is hosted in Canada and access to the files is relatively fast for people in the North American east coast, but it can be slow, or even painfully slow for anyone in further regions of the globe, such as Europe or Asia.
A solution has already been devised and tested with people in America, Europe and Asia, with speeds reported of over 30MB/s, making it blazing fast and perfect for serving those in game file assets. It does require a change in hosting providers and backend infrastructure which is currently being worked on.
This ticket is a high priority issue as having a good performing server is paramount to having an enjoyable gaming experience.