Get User API request timeout when the user and group in the large number

Problem description:
When the Artifactory group number is larger than 20000, and the user number is larger than 5000 the rest API 'api/security/users' will be slowly sometimes will timeout and UI request 'ui/api/v1/ui/permissiontargets/allUsersGroups' has the same issue.

What is the impact to the customer:
Customer use this API to get user very slowly, And also the Ui choose user and group in the edit permission page slowly too.

What is the expected behavior?
The response should be fast.

Steps to reproduce:
1. Create a clean artifactory
2. Create more than 5k users and 20k groups
3. Action the API 'api/security/users'
(or you can import access.json using attachment)

Environment details:
Artifactory version reproduced on
7.38.10

DB type & Version:
Postgresql13

Is this an HA env?
HA

Is this On-Prem or SaaS?
On-Prem

Severity - medium
Priority - medium

Link to the GCP machine/mill which holds the reproduction?
GCP

Possible workaround:
Increasing the access client time out

artifactory.access.client.connection.timeout=120000 #default 60000
artifactory.access.client.socket.timeout=120000 ##default 60000