Hi,
my suggestion to improve the situation is:
configure your Domain Managers properly to only send Alarms that are actionable and thus should be handled by SOI.
SOI is not an Event Console that is designed to handle every single Event - it is designed to show the impact auf faults to your Business Services.
As such, the Alarms that reach the console should be on a level to cause an action - e.g. open a ticket, send a mail, let an Operator do something, ...
No Operator, ticketing- or email-system can handle 350-400 "problems" per second, and thus this number should be optimized on the root level.
MichaelBoehm