Deprovision User - Unresponsive Popup on Web Interface

Greetings!

So this question is related to this forum post:

https://www.oneidentity.com/community/active-roles/f/forum/8228/user-deprovision

Where when our users are trying to deprovision another user on the web interface, the "Deprovisioning user xxxxx...." just stalls. We can see in the MMC console that after 3:30 minutes, the user is successfully deprovisioned, and that if we deprovision the user just via the console, it only takes 30 seconds.

The weird thing is that if we deprovision this user again (so, deprovision, undo deprovision, and then deprovision him again), the web interface responds quickly and only takes 30 seconds to show the "success" message in the web interface.

Does anybody know why this is happening and suggestions to fix the stalling of the popup? I didn't know if there was an IIS setting, or something where the web interface is caching the object....We are really at a lost and would appreciate any feedback.

Thank you!