performance issues freeradius 2.1.12

[khouzam yaghi]

hi i have around 10k users, i am creating a module for each
acct-status-type and this module will call a php script in the accounting
section, it is as follow

        if(Acct-Status-Type == "Start") {
                user-start
        }
       elsif (Acct-Status-Type == "Interim-Update") {
                user-interm-update
        }
       elsif(Acct-Status-Type == "Stop") {
                user-stop
        }
is this a good design or there is a better one??

everything is working perfect, i have around 15 mikrotik nases, but
sometimes i am receiving an error in the radius.log which is receiving
conflicting packets , and the error is always from a specific nas i.e
nas10, is it the nas that is not receiving the packet from the server or my
server is slow,

my database is well indexed + i am using an SSD hardisk