In P6 7.0 SP2, client is seeing slow performance with apply actuals

Hello,

From what I learned about summarization, when we run a service, P6 looks at any data that has changed and updates it. Now, with apply actuals, if we have a project with 100-200 timesheets, when we apply actuals, my assumption (wrong or right) is that P6 will run through all timesheets, look for any changes, and then apply actuals (most commonly applying the most recent), is this correct? We have a fairly large project and it is taking longer than usual to apply actuals. I know it could be related to RAM and server performance, but I thought that if