问题
In Visual Studio 2008 Business Intelligence Studio, reports preview many times faster than on the report server. Why does this happen and is there a solution to this?
回答1:
In BIDS, it holds a cache, so that the query is not executed every time you preview the report. So it seems fast, however on the reportserver it will need to get all of the data for the report with every request (unless it is cached).
Rendering might also be an issue, IE does not have the best reputation on rendering speed vs. other browsers.
来源：https://stackoverflow.com/questions/6796151/why-does-business-intelligence-studio-load-reports-faster-than-the-report-server