VPS tab loads slowly in CCP v2. Browser debug shows that most time-consuming operation is the request
The account owns a great amount (more than thousands) of active or terminated subscriptions.
The issue is caused by the bug with id #CCU-16913 ("Slow CCPv2 loading on VPS tab on account with lots of subs ( even disabled)").
Contact your TAM or PTA Team (firstname.lastname@example.org) to trace the status of the issue.