Thanks for the quick reply. I am using the most current version of Firefox, and it is not slow to load other websites. I don’t believe that the problem is with the browser.
I am not familiar with kproxy.com, and so I am unsure about going that route.
Since the issue seems to be with the WordPress Dashboard, I may try posting a question on their forum.
[Also, I am sorry about the typo on “DreamHost” in my original post.]