Do you find editing TFS Build Process Templates slow?
… of course you do.
Microsoft have today released a patch to improve performance and reliability of workflow designer which should help with the Build Process Template design surface.
See Buck Hodges blog for details
Read the complete post at http://blogs.blackmarble.co.uk/blogs/rfennell/archive/2011/08/09/do-you-find-editing-tfs-build-process-templates-slow.aspx