We have just upgraded Sitecore from 6.6 to 7.2, and ECM from 1.3 to 2.1. We are having issues with the Speak UI for ECM being extremely slow. Every operation that seems to fetch data takes several minutes. For example: retrieving the list of recipient lists, where an ajax post request takes minutes to the url http://[domain]/speak/EmailCampaign/TaskPages/AdHockTaskPage?type=Adhoc&id={FD1B449B-C3EA-4820-A10E-E7976A897B8F}&sc_speakcontentlang=nb-NO&ff=1
This is in all our environments (test/production), and we can't get anything from the logs even if we set debug=true on all config settings we can find.
A side note is that we previously used a module to segment the emails (https://marketplace.sitecore.net/en/Modules/Sitecore_EmailCampaign_Segment.aspx) that is deprecated for our version, so we've tried to clean up items and files for this, without anything getting better.
Has anyone had this issue?
For anyone with this problem in the future: This was a bug with the upgrade from 1.3 -> 2.1. Sitecore support filed it as a bug and sent me a dll which partly replaced some rendering logic for a ECM Speak component. So get in touch with Sitecore support and they should be able to help you!