[CaptivePortal][Accounting][Interim] parameterize Interim frequency

[oturpin]

Hi,
From clean install 22.1 , I setup radius accounting to freeradius.
I can see that opnsense is sending an Interim-update every 5 seconds => leading to very big acct detail files.
Where can I parameterize a longer period of time ? I just need 1 interim every 5 minutes.
Thx