Performance Problem [solved]

No, no kind of screenshot can indicate anything, just as your hardware doesn't really matter ... you're looking this from the wrong angle.

There's something blocking concurrent requests (if there are such) or time-outing (often a DNS lookup). Unless you're calling some other external service, I'd look at the DB config.

No external services. A little bit of jQuery is hosted locally on the server, minified, it just shows and hides a couple things with CSS.

Pages are mostly less than 10 input fields on forms that get stored in the database with some error checking involved, not super complicated.

DNS is not involved, the site doesn't communicate with external services. I've modified the hosts file on my PC to point to the server during development and the domain doesn't change, links don't leave the site.

I've commented out all the code in one of the controller's methods and I'm stepping through line by line to see if I can determine what affects the load times. Thanks for all the suggestions so far. I appreciate it!