Slow evaluations for GroupSelectionExpression in initialize Provisioner

We are on p11. When initialize a provisioner, it loads all groups that have provision_to attribute. We have about 77K groups to load which takes about 20 mins.

Logs like:
2019-10-04 10:39:31,383: [DefaultQuartzScheduler_Worker-1] INFO ProvisionerFactory CLog/pspng_activedirectory/ - - Constructing provisioner: pspng_activedirectory
2019-10-04 10:39:31,473: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - pspng_activedirectory: Compiling a list of all groups selected for provisioning
2019-10-04 10:39:31,473: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - Looking for folders that match attribute etc:pspng:provision_to=pspng_activedirectory
2019-10-04 10:39:31,508: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - Looking for groups that match attribute etc:pspng:provision_to=pspng_activedirectory
2019-10-04 10:39:51,594: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - pspng_activedirectory: There are 0 folders that match etc:pspng:provision_to attribute
2019-10-04 10:39:51,595: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - pspng_activedirectory: There are 77632 groups that match etc:pspng:provision_to attribute
2019-10-04 10:39:51,619: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - Looking for folders that match attribute etc:pspng:do_not_provision_to=pspng_activedirectory
2019-10-04 10:39:51,637: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - Looking for groups that match attribute etc:pspng:do_not_provision_to=pspng_activedirectory
2019-10-04 10:39:51,649: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - pspng_activedirectory: There are 0 folders that match etc:pspng:do_not_provision_to attribute
2019-10-04 10:39:51,650: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - pspng_activedirectory: There are 0 groups that match etc:pspng:do_not_provision_to attribute

For each group:
2019-10-04 10:39:51,689: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - Evaluated GroupSelection Jexl expression: 'true'
2019-10-04 10:39:51,690: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - Evaluated entire GroupSelection Jexl expression: 'true'
2019-10-04 10:39:51,692: [DefaultQuartzScheduler_Worker-1] DEBUG pspng_activedirectory CLog/pspng_activedirectory/ - - pspng_activedirectory: Group eresearch.auckland.ac.nz:resart201800007_t/#725887(Existing) matches group-selection filter.