Ok. we have found the problem.
This is reported in:
https://tracker.moodle.org/browse/MDL-51833?jql=text%20~%20%22tool_monitor_get_user_courses%22
and appears in 2.9.x with
function tool_monitor_get_user_courses() {
in file
admin/tool/monitor/lib.php
with many courses loaded.
I am waiting for one solution. At this moment, we are changed like a workaround:
if ($courses = get_user_capability_course('tool/monitor:subscribe', null, true, 'fullname', $orderby)) {
for
if ($courses = get_user_capability_course('tool/monitor:subscribe', null, false, 'fullname', $orderby)) {
Regards,
Agustin