Hi Mudit,
We don't have any existing information in relation to the restriction SANM Policies. It really depends on the complexity of your SNMP policies, how busy SpectroSERVER is as well as how many alarm Notifiers are in use.
If you are experiencing the performance issue with the SANM policies, please contact support and we will enable the Alarm Notifier debug to look into the logs.
Thank you.
Yan