Question around limits and capacity for APM IdP

I am wanting to try figure out what the limit or capacity is for my F5 APM unit (11.6.1 VE). It is set up as an IdP and terminates sessions as soon as a SAML token is given. I want to know what is the max performance I can expect or how to understand if my traffic is getting too high. There are a mixture of SAML SSO setups using a mixture of NTLM/Kerberos, AD Queries, LDAP Queries etc

 

Any tips or thoughts appreciated.