Hi,
I HOPE ANYONE FROM MIKROTIK SEES THIS POST.
Mikrotik has a problem with the RADIUS attribute Acct-Interim-Interval . If the radius server client sends to Mikrotik a value less than 60 the radius service freezes. Please make sure to ignore this parameter and set it to a minimum of 60.
MIKROTIK FREEZES with it receives a value less than 60 because it stupidly follows it even if may cause its service to fail.