Looking for some help with BLF in Freeswitch. Randomly for few users BLF indicator for parking and shared lines stops working.

Rebooting the phone fixes the problems for some time and then again it stops working.

We have FS 1.10.6

Approx. 500 Users Registered (most of them registered remotely from different networks)

1000 Contacts (Multiple registrations) Using Call Parking and Shared lines, most phones subscribe for BLF to monitor the calls on shared line or parked calls.

System Details: VM with 12 GB Ram and 8 Core CPU. Using Postgres for Core Data and profiles.

Max 40-50 calls.

Sometimes I notice high CPU on this server, while on other servers with no shared lines and no BLF, Virtual machines handles 100+ calls and 700 users. Anyone could provide any suggestions/hints to help troubleshoot this. Is this too much for one server to handle? Is BLF too complicated?