Hello,
Our Moodle is a 3.3.1+ version and we observe slow down while showing the view/grade assignment page in some precise cases.
The problem arises in a group assignment with option "Require group to make submission" open.
The group choice activity is simultaneously opened to complete the groups.
For example, for a group assignment in a course with 21 groups and 180 students, it takes more than 4 minutes to load the view/gade assignment page.
I suspect it to be linked to this old bug :
https://tracker.moodle.org/browse/MDL-43721
Our assignment plugin is up to date version and all associated plugins are also up to date.
Here are precise details about our assignment configuration :
mod_assign 2017051501
assignsubmission_comments 2017051500
assignsubmission_file 2017051500
assignsubmission_mahara 2017101600
assignsubmission_onlinetext 2017051500
assignfeedback_comments 2017051500
assignfeedback_editpdf 2017051500
assignfeedback_file 2017051500
assignfeedback_offline 2017051500
This problem is a non blocking problem but it is disrupting for the impacted teachers.
I am disposed to have further tests or informations on this problem.
Thanks in advance for feedback.
Kisses
Zabelle