In reply to Nick Roach.

Ni Nick, thanks for the reply! I will create a ticket and then provide login info for you guys to have a look at this development site.

Yes, I had updated this site from 2.5.9 to 2.6.4.1, and on further observation much of the lag appaers to be client side. On opening a page to edit or after updating it, my computer will sit at about 50% cpu useage for up to a minute or more. It is making editing long pages with complicated layouts extremely slow. I am even getting typing lag, it will take several seconds for characters to appear after they have been entered.

I will provide additional detail in the ticket.