IBM BPM - Deactivating Dynamic Group(type 4) Update - Performance improvement specially while login

What are Dynamic Groups?
Dynamic groups are created whenever a team or a task assignment is created using an expression. These expressions select users based on user attributes, group membership, and various other criteria. As a result, a dynamic group is created in the database. They are also known as Type 4 groups or in LSW_USR_GRP_XREF they will be having value of group_type = 4

Why Dynamic Groups get updated?

As mentioned earlier Dynamic Groups are set of other type of groups which includes external groups. so whenever any external or security gets updated, dynamic group also needs to get updated in order to be in sync with other groups.

When are dynamic groups updated?

There are several triggers that can cause dynamic group updates:

• When IBM Business Process Manager internal groups or a member of an internal group are updated in the Process Admin Console.
• When a user logs in to a IBM Business Process Manager web interface, the external group membership is replicated based on the external security provider settings. If changes are detected, dynamic groups are recalculated.
• When a user updates user attributes in the Process Admin Console or while using a REST API.
• During task creation using dynamic group expression.

Configuring IBM Business Process Manager to deactivate dynamic group updates

Modify the 100Custom.xml configuration file to deactivate updates for the specified triggers, as shown in the following example:

<properties>
<server merge="mergeChildren">
<update-dynamic-groups-on-login>false</update-dynamic-groups-on-login>
<update-dynamic-groups-on-task-creation>false</update-dynamic-groups-on-task-creation>
<update-dynamic-groups-on-uadchange>false</update-dynamic-groups-on-uadchange>
</server>
</properties>