OpManager running very slow.

We have increased the amount of devices monitored to 70, with a lot more to go. Already, we have noticed a dramatic slowdown of the interface. The screen now takes 30 to 45 seconds to load each page, which is not practical as a lot of changes need to be made. I have checked the server and network speed and all these are fine. It is therfore a problem with the application.

It may be down to the database size, so I have included our settings:

Alarms Database
Maintain 10000 recent alarms in the database.

Events Database
Delete events older than 30 day(s) in the Database.

Performance Database
Detailed statistics will be maintained for the last 7 day(s).
Hourly statistics will be maintained for the last 30 day(s).
Daily statistics will be maintained for the last 365 day(s).

Can you please advise if this is likely a database size problem, or if other changes need to be made.

Thanks