Performance Issue

I've got a client who uses FluentCRM with a pretty big list. Over 169K contacts. When he sends out campaign emails, they're often sent to almost 100K people at once, with open rates of 50-60%.

The issue we're seeing is that his campaign archive screen loads really, really slowly. And as you can see, he has a lot of emails in his history in the system. And he DOES purge them out to remove things older than 6 months, but you can see there's still a lot in there.

So, I think the way the queries are working on this campaign screen in order to show the stats is causing a really slow screen load. It seems to me the queries could be re-written, or perhaps some new indexes put into the database, that would speed up screen load time in instances where there is just a TON of data in the system.

Thoughts?