Hey Jonathan,
Among all the CPT’s with the posts we have around 3500 in the database, along with the revisions of those posts that have revision support turned on. But there are a total of 12300 entries in the post table. I did a series of tests of relationships between the various CPT’s that we have, and the presence of any of these relationships, heavily used or not, drastically changes the load time of the dashboard single CPT view on the site site anywhere from a 20 second increase to a complete timeout.
I was able to get the site back to usable conditions by deleting the ACF Pro files and replacing them with the free 4.4.2 version of the plugin. With that one it is back to normal running speeds, which is great, but I would prefer being able to use the PRO version.
