I just recently upgraded our school's site to 2.6.1 from 2.5. As I've been grading assignments I've noticed that the "View/grade all assignments" page is noticeably slower to load than in the past. Most pages on our site click along in a nice comfortable <2s load time and even smaller page generation times displayed in the performance information in the footer. My "View/grade all assignments page" is displaying about a 15-17 second page generation time in the footer when I enable the performance information. Turning on the filter and workflow filter seem to have no major effect. Changing my number of assignments displayed from 50 to 20 cut the performance info time down to 7-8 seconds. There are about 95 students in the course right now. Changing the assignments displayed from 50 to 100 put the page time at 30s.
I don't remember this process being anywhere near this long in 2.5. Has anyone else noticed this?